Effects of Holding Temperature for Austempering on Mechanical Properties of Si-Mn TRIP Steel

被引：0

作者：

LI Zhuang ^{[1
,2
]}

WU Di ^{[1
]}

机构：

[1] Northeastern University

[2] Shenyang Institute of Aeronautical Engineering

来源：

Journal of Iron and Steel Research(International) | 2004年 / 11卷 / 06期

关键词：

austempering; intercritical annealing; retained austenite; strain-induced martensite transformation; transformation-induced plasticity(TRIP); mechanical property;

D O I：

10.13228/j.boyuan.issn1006-706x.2004.06.011

中图分类号：

TG161 [钢的热处理]; TG142.1 [钢的组织与性能];

学科分类号：

080201 ; 080503 ; 080502 ;

摘要：

A new type of high strength steel containing a significant amount of stable retained austenite was obtained by austempering immediately after intercritical annealing.This sort of low carbon steel only contains alloying elements of silicon and manganese rather than nickel and chromium.Its mechanical properties were enhanced considerably due to strain-induced martensite transformation and transformation-induced plasticity(TRIP)of retained austenite when it was strained at temperatures between Msand Md,because retained austenite was moderately stabilized due to carbon enrichment by austempering.Austempering was carried out at different temperatures and 400 ℃ was found to be optimal.Tensile strength,total elongation and strength-ductility balance reached the maximum values and the product of tensile strength and total elongation exceeded 30 135 MPa % when the TRIP steel was held at 400 ℃ and strained at 350 ℃.

引用

页码：40 / 44

页数：5

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