Development of cast high strength microalloyed steels

被引：2

作者：

Mandal, P ^{[1
]}

Chakrabarti, D ^{[1
]}

Ray, KK ^{[1
]}

Chakrabarti, AK ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India

来源：

INTERNATIONAL JOURNAL OF CAST METALS RESEARCH | 2004年 / 17卷 / 02期

关键词：

high strength steels; microalloyed steels; heat treatment; tempering;

D O I：

10.1179/136404604225017465

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Cast microalloyed steels containing 1(.)25-1(.)3%Si and >2(.)0%Mn plus small quantities of nickel, chromium and microalloying elements (Nb, V, Ti) may be adequately strengthened by air cooling from 950degreesC. After a tempering treatment at 500-550degreesC, these low carbon (0.15-0.20%C) cast steels can exhibit YS 520725 MPa, UTS 690-820 MPa, 20-40% El and impact toughness up to 30 J at -40degreesC. The air cooled microstructures in these steels consist of precipitation strengthened ferrite+ bainite. The tempering treatment induces transformation of retained austenite to pearlite and improves mechanical properties. (C) 2004 W. S. Maney Son Ltd.

引用

页码：89 / 93

页数：5

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