Study of the austenite transformation in high-strength steel during quenching and partitoning

被引：0
作者：
Maisuradze, M. V. [1 ]
Kuklina, A. A. [1 ,2 ]
Yurovskikh, A. S. [1 ]
Nazarova, V. V. [1 ]
Antakov, E. V. [1 ]
机构：
[1] Ural Fed Univ, Ekaterinburg 620002, Russia
[2] Ural State Min Univ, Ekaterinburg, Russia
来源：
METALLURGIST | 2024年 / 67卷 / 11-12期
关键词：
Steel; Stepwise quenching; Retained austenite; Mechanical properties; Dilatometry; PHASE-TRANSFORMATIONS;
D O I：
10.1007/s11015-024-01661-1
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A dilatometric study of supercooled austenite transformation in steel 20Kh2G2SNMA is conducted during various stepwise quenching versions with exposure in the martensitic region. Processes occurring during single-stage, two-stage quenching, and stepwise quenching with tempering are studied. It is shown that two-stage quenching makes it possible to stabilize up to 14% of retained austenite at room temperature within the structure of the steel studied. Values of mechanical properties (strength, ductility, impact strength) are determined. It is established that quenching of the steel studied and partitioning provides higher strength and elongation indices compared to oil quenching and low-temperature tempering with lower values of relative reduction of area and impact strength.
引用
收藏
页码：1669 / 1679
页数：11
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