Investigation on hot deformation behavior of AISI T1 high-speed steel

被引：92

作者：

Liu, JT

Chang, HB

Wu, RH

Hsu, TY

Ruan, XY

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China

[2] Shanghai Jiao Tong Univ, Dept Plast Technol, Shanghai 200030, Peoples R China

[3] Shanghai Tech Coll Met, Dept Met Engn, Shanghai 200233, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2000年 / 45卷 / 03期

基金：

中国国家自然科学基金;

关键词：

flow stress; Zener-Hollomon parameter; hyperbolic sine function; strain rate; hot deformation; AISI T1;

D O I：

10.1016/S1044-5803(00)00071-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The hot deformation behavior of AISI T1 (18W-4Cr-1V) high-speed steel has been investigated in the temperature range 950-1150 degreesC at strain rates of 0.001- 10 s(-1) and true strains of 0-0.6. The results show that the activation energy for deformation, Q, decreases with the increase of strain below 1000 degreesC, and it changes slightly with the strain above 1000 degreesC. Metallography shows that there are fine carbide particles precipitated in the grains, and that these lead to dispersion hardening and an increase in the value of Q. There are fewer of these particles above 1000 degreesC than below it. The Zener-Hollomon parameter and the hyperbolic sine function are used to predict the flow stress as influenced by temperature and strain rate for different strain levels. (C) 2000 Elsevier Science Inc. All rights reserved.

引用

页码：175 / 186

页数：12

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