Effect of Heat Treatment on Mechanical Properties and Microstructure of Advanced High-Strength Steel

被引：3
作者：
Maisuradze, M. V. [1 ]
Yudin, Yu. V. [1 ]
Kuklina, A. A. [1 ,2 ]
Lebedev, D. I. [1 ,3 ]
机构：
[1] Ural Fed Univ, Ekaterinburg, Russia
[2] Ural State Min Univ, Ekaterinburg, Russia
[3] Russian Acad Sci, Mikheev Inst Met Phys, Ural Branch, Ekaterinburg, Russia
来源：
METAL SCIENCE AND HEAT TREATMENT | 2023年 / 64卷 / 9-10期
关键词：
steel; heat treatment; microstructure; bainite; mechanical properties; isothermal quenching; SUPERCOOLED AUSTENITE; RETAINED AUSTENITE; TRANSFORMATIONS; BAINITE; PHASE;
D O I：
10.1007/s11041-023-00845-x
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
An experimental high-strength steel 20Kh2G2SNMA with high resistance of supercooled austenite to formation of diffusion transformation products is studied. Dilatometric analysis of the phase and structural transformations under continuous cooling and isothermal holding is performed. The time-temperature ranges of the transformations are found. The thermokinetic diagram is plotted. The mechanical properties of the steel are determined after different treatments, i.e., annealing, normalizing, quenching, tempering, isothermal and step quenching. It is shown that the presence of bainite in the structure lowers the impact toughness of the steel independently of its morphology and of the temperature range of its formation.
引用
收藏
页码：522 / 527
页数：6
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