Research on the dynamic recrystallization kinetics of Aermet100 steel

被引：97

作者：

Ji, Guoliang ^{[1
,2
]}

Li, Fuguo ^{[2
]}

Li, Qinghua ^{[2
]}

Li, Huiqu ^{[3
]}

Li, Zhi ^{[3
]}

机构：

[1] Henan Polytech Univ, Sch Mat Sci & Engn, Jiaozuo 454000, Peoples R China

[2] NW Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China

[3] Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 09期

关键词：

Aermet100; steel; Hot deformation; Activation energy; Dynamic recrystallization; MICROSTRUCTURAL EVOLUTION; DEFORMED AUSTENITE; BEHAVIOR; ALLOY; DEFORMATION; AERMET-100; MO; CR;

D O I：

10.1016/j.msea.2009.12.001

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Using the compression tests on a Gleeble-3800 thermo-mechanical simulator, the hot deformation behavior of ultrahigh strength Aermet100 steel was studied in the temperature ranges of 800-1200 degrees C and the strain rate ranges of 0.01-50 s(-1). Dependence of the peak Stress on temperature and strain rate for Aermet100 steel is described by means of the conventional hyperbolic sine equation; By regression analysis, the activation energy in the whole range of deformation temperature was determined to be Q = 489.10 kJ/mol. The dynamic recrystallization (DRX) kinetics of Aermet100 steel is established by further analysis of true stress-true strain curves. The complete DRX grain size is dependent only on Zener-Hollomon parameter (Z) and is independent of the initial grain size and accumulated strain, because Z controls the stored energy. The complete DRX grain size is a power law function of Z with an exponent of -0.24. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2350 / 2355

页数：6

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