Plastic behavior of a nickel-based alloy under monotonic-tension and low-cycle-fatigue loading

被引：58

作者：

Huang, E-Wen ^{[2
]}

Barabash, Rozaliya I. ^{[1
,3
]}

Wang, Yandong ^{[2
,4
]}

Clausen, Bjorn ^{[5
]}

Li, Li ^{[2
]}

Liaw, Peter K. ^{[2
]}

Ice, Gene E. ^{[1
]}

Ren, Yang ^{[6
]}

Choo, Hahn ^{[2
]}

Pike, Lee M. ^{[7
]}

Klarstrom, Dwaine L. ^{[7
]}

机构：

[1] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[3] Univ Tennessee, Ctr Mat Proc, Knoxville, TN 37996 USA

[4] Northeastern Univ, Minist Educ, Key Lab Anisotropy & Texture Mat, Shenyang 110004, Peoples R China

[5] Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM 87545 USA

[6] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA

[7] Haynes Int Inc, Dept Technol Engn, Kokomo, IN 46904 USA

来源：

INTERNATIONAL JOURNAL OF PLASTICITY | 2008年 / 24卷 / 08期

基金：

美国国家科学基金会;

关键词：

plasticity; dislocations; in-situ neutron-diffraction; fatigue;

D O I：

10.1016/j.ijplas.2007.10.001

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The plastic behavior of an annealed HASTELLOY (R) C-22HS (TM) alloy, a face-centered cubic (FCC), nickel-based superalloy, was examined by in-situ neutron-diffraction measurements at room temperature. Both monotonic-tension and low-cycle-fatigue experiments were conducted. Monotonic-tension straining and cyclic-loading deformation were studied as a function of stress. The plastic behavior during deformation is discussed in light of the relationship between the stress and dislocation-density evolution. The calculated dislocation-density evolution within the alloy reflects the strain hardening and cyclic hardening/softening. Experimentally determined lattice strains are compared to verify the hardening mechanism at selected stress levels for tension and cyclic loadings. Combined with calculations of the dislocation densities, the neutron-diffraction experiments provide direct information about the strain and cyclic hardening of the alloy. Published by Elsevier Ltd.

引用

页码：1440 / 1456

页数：17

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