On the extent of transformation of austenite to bainitic ferrite and carbide during austempering of high Si steel for prolonged duration and its effect on mechanical properties

被引：15
作者：
Varshney, A. [1 ]
Sangal, S. [2 ]
Pramanick, A. K. [3 ]
Mondal, K. [2 ]
机构：
[1] Maulana Azad Natl Inst Technol, Dept Mech Engn, Bhopal 462003, Madhya Pradesh, India
[2] Indian Inst Technol Kanpur, Dept Mat Sci & Engn, Kanpur 208016, Uttar Pradesh, India
[3] CSIR Natl Met Lab, Jamshedpur 831007, Jharkhand, India
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2020年 / 793卷
关键词：
Steels; Austempering; Bainite; Mechanical properties; METASTABLE RETAINED AUSTENITE; DUAL-PHASE STEELS; INDUCED-PLASTICITY; MULTIPHASE STEELS; MARTENSITIC-TRANSFORMATION; CEMENTITE PRECIPITATION; HARDENING BEHAVIOR; THEORETICAL-MODEL; FLOW BEHAVIOR; SUPER STRONG;
D O I：
10.1016/j.msea.2020.139764
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this work, the effect of holding durations (10-60min) during austempering at 300, 350 and 400 degrees C on the structure and properties of a 0.61C-1.71Si-0.86Mn steel has been studied. At all the austempering temperatures, austenite fraction gradually decreases with the increase in holding duration. Austempering temperature has been found to influence the rate of depletion of austenite. The effect of Mn and Si content of steel on the extent of transformation of austenite to bainitic ferrite and carbides during prolonged austempering holding has also been looked at. Analysis drawn from existing literature along with the current data shows that along with Si, Mn also plays an important role in controlling the rate of transformation of austenite to bainitic ferrite and carbide.
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页数：13
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