Low-cycle fatigue behavior and deformation substructure of Ti-2Al-2.5Zr alloy at 673 K

Hang Wang; Yanling Xu; Qiaoyan Sun; Lin Xiao; Jun Sun; Peng Ge

Low-cycle fatigue behavior and deformation substructure of Ti-2Al-2.5Zr alloy at 673 K

Hang Wang
, Yanling Xu
, Qiaoyan Sun
, Lin Xiao
, Jun Sun
, Peng Ge

材料科学与工程学院

Xi'an Jiaotong University
Northwest Institute for Nonferrous Metal Research

科研成果: 期刊稿件 › 文章 › 同行评审

3 引用（Scopus）

摘要

Low-cycle fatigue (LCF) tests of Ti-2Al-2.5Zr samples were performed at 673 K. The cyclic stress response curves show that an initial cyclic hardening followed by cyclic softening was displayed, subsequently second hardening appeared. Furthermore, this alloy displays much higher LCF life at 673 K than that at RT when cyclic strain amplitude (△ε_t/2) exceeds 1.0%. Transmission electron microscopy (TEM) observations revealed that the typical dislocation structures were dislocation wall and cell. The improvement in LCF life of Ti-2Al-2.5Zr can be attributed to homogeneity of plastic deformation due to activation of multiple slips.

源语言	英语
页（从-至）	165-168
页数	4
期刊	Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research
卷	24
期	2
出版状态	已出版 - 4月 2010

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abstract = "Low-cycle fatigue (LCF) tests of Ti-2Al-2.5Zr samples were performed at 673 K. The cyclic stress response curves show that an initial cyclic hardening followed by cyclic softening was displayed, subsequently second hardening appeared. Furthermore, this alloy displays much higher LCF life at 673 K than that at RT when cyclic strain amplitude (△εt/2) exceeds 1.0\%. Transmission electron microscopy (TEM) observations revealed that the typical dislocation structures were dislocation wall and cell. The improvement in LCF life of Ti-2Al-2.5Zr can be attributed to homogeneity of plastic deformation due to activation of multiple slips.",

keywords = "Dislocation, Low cycle fatigue, Metallic materials, Secondary cyclic hardening, Ti-2Al-2.5Zr",

author = "Hang Wang and Yanling Xu and Qiaoyan Sun and Lin Xiao and Jun Sun and Peng Ge",

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T1 - Low-cycle fatigue behavior and deformation substructure of Ti-2Al-2.5Zr alloy at 673 K

AU - Wang, Hang

AU - Xu, Yanling

AU - Sun, Qiaoyan

AU - Xiao, Lin

AU - Sun, Jun

AU - Ge, Peng

PY - 2010/4

Y1 - 2010/4

N2 - Low-cycle fatigue (LCF) tests of Ti-2Al-2.5Zr samples were performed at 673 K. The cyclic stress response curves show that an initial cyclic hardening followed by cyclic softening was displayed, subsequently second hardening appeared. Furthermore, this alloy displays much higher LCF life at 673 K than that at RT when cyclic strain amplitude (△εt/2) exceeds 1.0%. Transmission electron microscopy (TEM) observations revealed that the typical dislocation structures were dislocation wall and cell. The improvement in LCF life of Ti-2Al-2.5Zr can be attributed to homogeneity of plastic deformation due to activation of multiple slips.

AB - Low-cycle fatigue (LCF) tests of Ti-2Al-2.5Zr samples were performed at 673 K. The cyclic stress response curves show that an initial cyclic hardening followed by cyclic softening was displayed, subsequently second hardening appeared. Furthermore, this alloy displays much higher LCF life at 673 K than that at RT when cyclic strain amplitude (△εt/2) exceeds 1.0%. Transmission electron microscopy (TEM) observations revealed that the typical dislocation structures were dislocation wall and cell. The improvement in LCF life of Ti-2Al-2.5Zr can be attributed to homogeneity of plastic deformation due to activation of multiple slips.

KW - Dislocation

KW - Low cycle fatigue

KW - Metallic materials

KW - Secondary cyclic hardening

KW - Ti-2Al-2.5Zr

UR - https://www.scopus.com/pages/publications/77953063532

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AN - SCOPUS:77953063532

SN - 1005-3093

VL - 24

SP - 165

EP - 168

JO - Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research

JF - Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research

IS - 2

ER -

Low-cycle fatigue behavior and deformation substructure of Ti-2Al-2.5Zr alloy at 673 K

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