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# Influence of Quenching On line on Properties of X70 Steel

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• Description:Influence of Quenching On-line on Properties of X70 Steel ...Jan 01, 2012Properties of the X70 sour service seamless steel pipes with the quenching online process can be improved. It enables the products with high strength and good toughness, even if the products with large dimension such as 406mm in diameter and 23mm in wall thickness.AIST - Digital Library

2012 Steel Properties & Applications Conference Proceedings. Influence of Quenching On line on Properties of X70 Steel On the Decomposition of Austenite in a High-Silicon Steel During Quenching and Partitioning. Influence of Quenching On line on Properties of X70 Steel Property of High-Grade Linepipe Steel. The Research of Influence Alloying Elements on Processes Structure Formation in Stamp Steel.Anisotropy and microstructural evolutions of X70 pipeline Influence of Quenching On line on Properties of X70 Steel Tensile properties of different directions of X70 pipeline steel plate were tested, and microstructural evolutions of different zones along the transverse direction (TD) were also investigated using electron backscatter diffraction.

### Austenite Grain Growth Kinetics in API X65 and X70 Line Influence of Quenching On line on Properties of X70 Steel

The aim of the present work is to investigate the microstructural behavior of austenite grain size (AGS) during the reheating process of two different API steel grades (X65 and X70). The steel samples were austenitized at 1150°C, 1200°C, and 1250°C for various holding times from 10 to 60 minutes and quenched in ice water. The samples were then annealed at 500°C for 24 hours to reveal the Influence of Quenching On line on Properties of X70 Steel Cited by 11Publish Year 2012Author Ling Zhongqiu, Fang Jian, Zhou Yong, Yuan ZexiInfluence of Quenching On-line on Properties of X70 Steel Influence of Quenching On line on Properties of X70 Steel Influence of Quenching On-line on Properties of X70 Steel for Sour Service Seamless Pipe. Influence of Quenching On line on Properties of X70 Steel The results show that in red soil, the corrosion rate of X70 steel decreases with time, and follows Influence of Quenching On line on Properties of X70 Steel Cited by 1Publish Year 2015Author Jing Li, Xiu Hua Gao, Yong Lu, Lin Xiu DuThe influence of microstructure on the protective Influence of Quenching On line on Properties of X70 Steel May 01, 2013In order to investigate the effect of microstructure on the corrosion properties of welded API X70 steel, a one-step austenitizing with two-step quenching and subsequent tempering treatment was applied and the following conclusions were observed 1. The corrosion product layer composition included FeCO 3, FeOCl, FeCl 2, Fe 3 O 4 and Fe 2 O 3. The presence of the soluble metalchloride complexes within the corrosion product decreased the protective properties of the corrosion

### Effect of Rolling in the Recrystallization Temperature Influence of Quenching On line on Properties of X70 Steel

An API 5L X70 steel (0.099 C-1.664 Mn-0.04 Al-0.02 Ti-0.258 Si (wt.%)) with a thickness of 8 mm was used in this study. The as-received steel plate had banded ferrite-pearlite with a partially recrystallized microstructure with mean grain sizes of 8 ± 1 µm and dominant {001}//ND and -fibres as the common texture orientation during hot Influence of Quenching On line on Properties of X70 Steel Effect of composition on properties of 30CrMo steel steel Influence of Quenching On line on Properties of X70 Steel The structure of steel determines its properties. 30CrMo steel is an alloy quenched and tempered structural steel, in which the content of Cr is 0.8% - 1.1%, Mo is 0.15% - 0.25%, so 30CrMo steel has high hardenability and toughness.. 30CrMo steel is tempered by oil quenching and then tempered at high temperature.Effect of deformation and cooling rate on the Influence of Quenching On line on Properties of X70 Steel Using seamless steel pipes for X70 sour service pipeline can improve the security, because of its structure. Influence of Quenching On line on Properties of X70 Steel Influence of Quenching On-line on Properties of X70 Steel for Sour Service Seamless Influence of Quenching On line on Properties of X70 Steel

### Effect of manganese content and microstructure on the Influence of Quenching On line on Properties of X70 Steel

Effect of manganese content and microstructure on the susceptibility of X70 pipeline steel to hydrogen cracking . Abstract . The influence of composition and microstructure on susceptibility to hydrogen induced cracking (HIC) was investigated in high strength pipeline steels, with Mn contents of 1.2% (standard, X70), and 0.5% (medium, MX70).Effect of quench and temper on hardness and wear of HRP Influence of Quenching On line on Properties of X70 Steel Austenite temperature and temper affect steel hardness and wear resistance of quenched and tempered steel. To obtain hardness and wear due to the influence of quench and temper on hot rolled plate steel as the armor steel candidate. The material used in this research is hot rolled plate steel made in Indonesia with a carbon content of 0.29 %.Effects of Cooling Rate during Quenching and Tempering Influence of Quenching On line on Properties of X70 Steel The mechanical properties of thick steel plates used for large structures such as flanges are controlled using post-heat treatment [6,7,8,9].Quenching is used for the purpose of improving strength but it has a detrimental effect on low temperature toughness due to the formation of a hard secondary phase.

### Effects of Cooling Rate during Quenching and Tempering Influence of Quenching On line on Properties of X70 Steel

The mechanical properties of thick steel plates used for large structures such as flanges are controlled using post-heat treatment [6,7,8,9].Quenching is used for the purpose of improving strength but it has a detrimental effect on low temperature toughness due to the formation of a hard secondary phase.Effects of Heat Treatment Process on Mechanical Properties Influence of Quenching On line on Properties of X70 Steel Effects of heat treatment process of quenching and tempering under different temperature conditions on mechanical properties of X70 grade pipeline steel bends were studied.Effects of Heat Treatment Process on Mechanical Properties Influence of Quenching On line on Properties of X70 Steel Effects of heat treatment process of quenching and tempering under different temperature conditions on mechanical properties of X70 grade pipeline steel bends were studied. Brinell hardness, yield strength, tensile strength, elongation and impact absorbing energy of the bends were tested by using hardness tester, cupping machine and impact testing machine, respectively.

### Effects of quenching process on mechanical properties and Influence of Quenching On line on Properties of X70 Steel

The effects of direct quenching and tempering (DQ-T) process and conventional reheat quenching and tempering (RQ-T) processes on mechanical properties and microstructure of high strength steel were investigated. The DQ process was found to enhance the hardenability of steel effectively. The tensile strength and yield strength of DQ specimen was 975 MPa and 925 MPa respectively, which were Influence of Quenching On line on Properties of X70 Steel Effects of quenching process on mechanical properties and Influence of Quenching On line on Properties of X70 Steel The effects of direct quenching and tempering (DQ-T) process and conventional reheat quenching and tempering (RQ-T) processes on mechanical properties and microstructure of high strength steel were investigated. The DQ process was found to enhance the hardenability of steel effectively. The tensile strength and yield strength of DQ specimen was 975 MPa and 925 MPa respectively, which were Influence of Quenching On line on Properties of X70 Steel Formation and Dissolution of Carbides and Nitrides in the Influence of Quenching On line on Properties of X70 Steel After making a weld seam on X70 steel, its microstructure varies significantly from one zone to another (the weld metal, the heat affected zone), according to the diffractograms of the two zones in the raw state (without heat treatment). Influence of Quenching On line on Properties of X70 Steel Influence of quenching on-line on properties of X70 steel for sour service seamless pipe. International Influence of Quenching On line on Properties of X70 Steel

### Grain Size and Its Influence on Materials Properties

Grain Size and Its Influence on Materials Properties 20 August 2005 IndustrialHeating Fig. 1 Ferrite grain structure of a lamination steel; 2%nital etch. Fig. 2 Austenite grains with annelaing twins in AISI Type 316 stainless steel; Kallings number 2 etch.High Strength Low Alloy Steel - IMOAMo-containing X70-80 line pipe steel There is a strong trend towards increased operating pressure for future long-distance gas pipelines, which will require steels with X80 properties and higher. Steel producers are making good progress in meeting this challenge, especially for heavy-gage hot strip.Influence of Dual-Phase Microstructures on the Properties Influence of Quenching On line on Properties of X70 Steel The influence of dual-phase microstructures on mechanical properties of X70, X80, and X90 line pipes is investigated. It is found that the line pipes with dual-phase microstructures possess both larger uniform elongation and higher hardening exponent, especially for high grade steel X90. The tensile deformation of dual-phase line pipe does not follow the trend predicted by the Hollomon formula Influence of Quenching On line on Properties of X70 Steel

### Influence of Dual-Phase Microstructures on the Properties Influence of Quenching On line on Properties of X70 Steel

The influence of dual-phase microstructures on mechanical properties of X70, X80, and X90 line pipes is investigated. It is found that the line pipes with dual-phase microstructures possess both larger uniform elongation and higher hardening exponent, especially for high grade steel X90. The tensile deformation of dual-phase line pipe does not follow the trend predicted by the Hollomon formula Influence of Quenching On line on Properties of X70 Steel Influence of Quenching On-line on Properties of X70 2. Properties of the X70 sour service seamless steel pipes with the quenching online process can be improved. It enables the products with high strength and good toughness, even if the products with large dimension such as 406mm in diameter and 23mm in wall thickness.Influence of Quenching On-line on Properties of X70 Steel Influence of Quenching On line on Properties of X70 Steel Influence of Quenching On-line on Properties of X70 Steel for Sour Service Seamless Pipe . By Ling Zhongqiu, Fang Jian, Zhou Yong and Yuan Zexi. Cite . BibTex; Full citation; Publisher Elsevier BV. Year 2012. DOI identifier 10.1016/j.egypro.2012.01.072. OAI identifier Provided by Influence of Quenching On line on Properties of X70 Steel

### Influence of Quenching On-line on Properties of X70 Steel Influence of Quenching On line on Properties of X70 Steel

Jan 01, 2012Properties of the X70 sour service seamless steel pipes with the quenching online process can be improved. It enables the products with high strength and good toughness, even if the products with large dimension such as 406mm in diameter and 23mm in wall thickness.Magnetism and Microstructure Characterization of Phase Influence of Quenching On line on Properties of X70 Steel Structural steel for buildings and bridges, line pipes, and automotive sheet applications; those are just a few major applications for low carbon steel. Also, the characteristics of all steel types depend on their chemical compositions, preparation history, applied heat treatment behaviors, and following quenching Mechanical Properties of High-Nb X80 Steel Weld Pipes for Influence of Quenching On line on Properties of X70 Steel The mechanical properties of steel pipe have great effects on the integrality and operation safety of gas transmission pipeline. In order to reduce the cost of the steel pipe, the high-Nb X80 pipeline steels with the different alloying systems have been used in the Second West-to-East Gas Transmission Pipeline Project. Nevertheless, an investigation into the effects of chemical composition on Influence of Quenching On line on Properties of X70 Steel

### Mechanical and Metallurgical Properties of Grade X70 Steel Influence of Quenching On line on Properties of X70 Steel

Sep 26, 2020The influence of microstructure and composition on permeation of hydrogen in 1.2 and 0.5 wt.% Mn X70 pipeline steels after different processing was investigated using an Metallurgy Matters Weldings effect on strengthened steelTheres a little grain growth at the fusion line, but usually not enough to have any effect on the metals properties. Transformation-hardened metals react much like solid-solution-hardened metals, assuming they have enough hardenability to form martensite during heat treatment or have formed martensite in previous heat treatments.Microstructure and Charpy impact properties of ferrite Influence of Quenching On line on Properties of X70 Steel Mar 26, 2014The API X70 linepipe steel with a ferrite/martensite dual phase microstructure has been rarely studied. The impact properties are discussed, using the obtained Charpy curves. From these curves the ductilebrittle transition temperature DBTT is identified. 2. Experimental procedure

### Microstructure and Mechanical Properties of X70 Pipeline Influence of Quenching On line on Properties of X70 Steel

Anti-H2S X70 pipeline steel was developed. The microstructure of X70 pipeline steel was studied by the analysis of OM, SEM and TEM. The precipitation behavior was discussed. The comprehensive mechanical properties, HIC and SCC performance were systematically studied. The results indicated that the microstructure of the experimental steel was mainly acicular ferrite and granular bainite.Precipitation behaviors of X70 acicular ferrite pipeline steelInfluence of Quenching On-line on Properties of X70 Steel for Sour Service Seamless Pipe. Article. Influence of Quenching On line on Properties of X70 Steel the influence of quenching on-line on the property and microstructure of such a product was Influence of Quenching On line on Properties of X70 Steel Proceedings of the 10th International Conference on Steel Influence of Quenching On line on Properties of X70 Steel 14.Influence of M-A Island Volume Fraction on Mechanical Properties of High Strength Pipeline Steel 15.Study on Transformation of HTP X100 Pipeline Steel during Continuous Cooling 16.Influence of Cooling Condition on Microstructure and Tensile Properties of X80 High Deformability Line Pipe Steel

### Quenching Process and Mediums Steel Metallurgy

A salt bath is the ideal quenching medium for a steel of not too large section with good hardenability. Table 6.12 gives some composition of salts and the useful temperature range for each mixture. The recommended holding time in the salt bath is 2-4 min/cm of section thickness, the Quenching and tempering - tec-scienceIn order to influence the hardness and the strength of a steel, a special heat treatment, called quenching and tempering, has been developed. Quensching and tempering can be divided into three basic steps austenitizing heating to above the GSK line into the austenite region; quenching rapid cooling up below $$\gamma$$-\(\alpha Influence of Quenching On line on Properties of X70 Steel Quenching and tempering of welded carbon steel tubularsThe Influence of Prior Processes. The quench and temper process can be affected by several things which may be beyond the control of the heat treater. Some of the more common variables are steel type, rolling method, forming processes, welding, sizing, and seam normalizing. Steel Type.

### Quenching cooling process in metal forming

Quenching In the cooling or quenching process, the forming tool remains closed for a certain amount of time until the part is cooled down from approximately 900 °C to below 400 °C. Cooling enables the steel material to harden so that the finished sheet metal part has a final strength of up to 1500 MPa.Steel - Effects of heat-treating BritannicaSteel - Steel - Effects of heat-treating Adjusting the carbon content is the simplest way to change the mechanical properties of steel. Additional changes are made possible by heat-treatingfor instance, by accelerating the rate of cooling through the austenite-to-ferrite transformation point, shown by the P-S-K line in the figure. (This transformation is also called the Ar1 transformation Influence of Quenching On line on Properties of X70 Steel The Influence of Centerline Segregation on the Mechanical Influence of Quenching On line on Properties of X70 Steel The objective of this paper is to study the influence of centerline segregation degree on the microstructure and mechanical properties of X70 pipeline steels. In this study, the mechanical properties of strips produced from the slabs are examined and the results show that centerline segregation is some adverse effect on Charpy impact toughness Influence of Quenching On line on Properties of X70 Steel

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