Dynamic strain aging behavior of modified 9Cr-1Mo and reduced activation ferritic martensitic steels under low cycle fatigue

被引：46

作者：

Mariappan, K. ^{[1
]}

Shankar, Vani ^{[1
]}

Sandhya, R. ^{[1
]}

Reddy, G. V. Prasad ^{[1
]}

Mathew, M. D. ^{[1
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Mech Met Div, Kalpakkam 603102, Tamil Nadu, India

来源：

JOURNAL OF NUCLEAR MATERIALS | 2013年 / 435卷 / 1-3期

关键词：

HIGH-TEMPERATURE; TENSILE PROPERTIES; CREEP; DEFORMATION; INSTABILITY;

D O I：

10.1016/j.jnucmat.2012.12.049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Influence of temperature and strain rate on low cycle fatigue (LCF) behavior of modified 9Cr-1Mo ferritic martensitic steel and 1.4W-0.06Ta reduced activation ferritic martensitic (RAFM) steel in normalized and tempered conditions was studied. Total strain controlled LCF tests between 300 and 873 K on modified 9Cr-1Mo steel and RAFM steel and at various strain rates on modified 9Cr-1Mo steel were performed at total strain amplitude of +/- 0.6%. Both the steels showed continuous cyclic softening at all temperatures. Whereas manifestations of dynamic strain aging (DSA) were observed in both the steels which decreased fatigue life at intermediate temperatures, at higher temperatures, oxidation played a crucial role in decreasing fatigue life. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：207 / 213

页数：7

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