EFFECTS OF THE TEMPERING TEMPERATURE ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF X70 DUAL PHASE STEEL

被引：1
|
作者：
Tahar, Mansouri [1 ]
Sami, Zidelmel [1 ]
Omar, Allaoui [1 ]
机构：
[1] Univ Laghouat, Lab Proc Engn, BP 37G Route Ghardaia, Laghouat 03000, Algeria
来源：
METALLURGICAL & MATERIALS ENGINEERING | 2022年 / 28卷 / 02期
关键词：
dual phase steel; intercritical annealing; tempering; mechanical properties; MARTENSITE VOLUME FRACTION; WORK-HARDENING BEHAVIOR; FERRITE; TENSILE; MORPHOLOGY;
D O I：
10.30544/753
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
This study uses direct quenching (DQ) heat treatment at an intercritical annealing temperature (IAT) of 800 degrees C to form a martensite-ferrite dual phase microstructure of X70 steel. The effects of tempering temperatures ranging from 200 to 500 degrees C on tensile properties in a dual-phase X70 steel are investigated. Carbon diffusion and redistribution in the microstructure are influenced by tempering. It was discovered that the amount of carbides increases with the tempered temperature, resulting in depleted carbon in martensite. Conversely, increasing the tempered temperature causes a decrease in ultimate tensile strength and yield strength while increasing elongation.
引用
收藏
页码：351 / 358
页数：8
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