Effect of austempering on microstructure and mechanical properties of a GCr18Mo steel

被引：10

作者：

Wen, Jiuba ^{[1
]}

Li, Qian ^{[1
]}

Long, Yongqiang ^{[1
]}

机构：

[1] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471003, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 438卷 / SPEC. ISS.期

关键词：

GCr18Mo steel; B-L/M duplex structure; austempering;

D O I：

10.1016/j.msea.2006.02.199

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure and mechanical properties of a GCr 18Mo steel were investigated. The martensite/lower bainite (B-L/M) duplex structure with various B-L volume fractions (f(BL)) or that full of B-L were produced by austenitizing at 870 degrees C, quenching in nitrates at 230 degrees C and holding for different times. The steels with such structures exhibit higher strength-toughness than that of full martensite. When f(BL) is approximately 37.5% obtained by holding for about 60 min, the duplex-structured steel gives rise to the best combination of mechanical properties. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：251 / 253

页数：3

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