Manifestations of dynamic strain aging under low and high cycle fatigue in a type 316LN stainless steel

被引：15

作者：

Sarkar, Aritra ^{[1
]}

Nagesha, A. ^{[1
]}

Sandhya, R. ^{[1
]}

Laha, K. ^{[2
]}

Okazaki, M. ^{[3
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Mat Dev & Technol Div, Kalpakkam, Tamil Nadu, India

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

[3] Nagaoka Univ Technol, Dept Mech Engn, Nagaoka, Niigata, Japan

来源：

MATERIALS AT HIGH TEMPERATURES | 2018年 / 35卷 / 06期

基金：

日本学术振兴会;

关键词：

Dynamic strain aging; low cycle fatigue; high cycle fatigue; 316LN SS; BEHAVIOR; TEMPERATURE; DESIGN;

D O I：

10.1080/09603409.2017.1404684

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Influence of Dynamic strain aging (DSA) under low cycle fatigue (LCF) and high cycle fatigue (HCF) loading was investigated by conducting LCF and HCF tests on specimens over a wide range of temperature from 573 to 973 K. DSA was found to be highly pronounced in the temperature range of 823-873 K. DSA was seen to have contrasting implications under LCF and HCF deformation. The cyclic hardening owing to DSA caused an increase in the cyclic stress response under LCF, leading to decrease in cyclic life. On the other hand, the DSA-induced strengthening suppressed the crack initiation phase under HCF where the applied stress remains fixed, leading to an increase in the cyclic life.

引用

页码：523 / 528

页数：6

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