Study on Austenite Grain Growth Law of Ultra-High Strength Hot-Stamped 22MnB5 Steel During Thin Slab Casting and Rolling Process

被引：8

作者：

Zhang, Haohao ^{[1
]}

Long, Mujun ^{[1
]}

Tang, Peizhao ^{[1
]}

Ai, Songyuan ^{[1
]}

Guo, Wei ^{[2
]}

Chen, Dengfu ^{[1
]}

Wu, Jialu ^{[1
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Lab Mat & Met, Chongqing 400030, Peoples R China

[2] Shanghai Aerosp Equipment Mfg Gen Factory Co Ltd, Shanghai 200240, Peoples R China

来源：

STEEL RESEARCH INTERNATIONAL | 2023年 / 94卷 / 08期

基金：

中国国家自然科学基金;

关键词：

austenite grain size; grain growth; traditional process; TSCR process; ultra-high strength steels; DYNAMIC RECRYSTALLIZATION; MECHANICAL-PROPERTIES; REHEATING PROCESS; PREDICTION MODEL; PHASE-TRANSITION; TIN INCLUSIONS; TEMPERATURE; DISSOLUTION; PARAMETERS; DUCTILITY;

D O I：

10.1002/srin.202300103

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Clarifying the austenite grain growth law in the thin slab casting and rolling (TSCR) process can provide theoretical guidance for the control of austenite grain in the slab. Starting with the austenite nucleation during solidification process, the growth law of austenite grains is methodically studied throughout the TSCR continuous casting and soaking process. The results show that the austenite growth is not interrupted during the TSCR continuous casting and soaking process. The austenite grain growth in the continuous casting process accounts for more than 70% of the total growth. The growth rate of austenite in the continuous casting cooling process is always faster than that when reheated to this temperature. Compared with the holding temperature and holding time, the final size of austenite grains in the TSCR process slab is most affected by the continuous casting cooling rate. In addition, compared with the traditional process, the growth rate of austenite in TSCR process is faster at the end of soaking.

引用

页数：10

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