Microstructure evolution of Al-12Si-CuNiMg alloy under high temperature low cycle fatigue

Jinxiang Liu; Qing Zhang; Zhengxing Zuo; Yi Xiong; Fengzhang Ren; Alex A. Volinsky

doi:10.1016/j.msea.2013.03.027

Microstructure evolution of Al-12Si-CuNiMg alloy under high temperature low cycle fatigue

Jinxiang Liu^*, Qing Zhang, Zhengxing Zuo, Yi Xiong, Fengzhang Ren, Alex A. Volinsky

^*Corresponding author for this work

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

Microstructure evolution of the Al-12Si-CuNiMg alloy under high temperature low cycle fatigue was investigated with scanning and transmission electron microscopy. The alloy exhibits cyclic softening at diverse total strain amplitudes and loading temperatures. The material fatigue life obviously decreases with the increase of the strain amplitude at the same temperature. However, fatigue life increases and microstructure improves with temperature increase at the same strain amplitude. At certain loading temperatures and strain amplitudes, the microstructure can be refined. The fracture morphology changes gradually from brittle quasi-cleavage fracture, with numerous small cracks, to quasi-cleavage fracture with numerous small dimple gliding fractures.

Original language	English
Pages (from-to)	186-190
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	574
DOIs	https://doi.org/10.1016/j.msea.2013.03.027
Publication status	Published - 1 Jul 2013

Keywords

Al-12Si-CuNiMg alloy
Cyclic softening
Fatigue
Microstructure evolution

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10.1016/j.msea.2013.03.027

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title = "Microstructure evolution of Al-12Si-CuNiMg alloy under high temperature low cycle fatigue",

abstract = "Microstructure evolution of the Al-12Si-CuNiMg alloy under high temperature low cycle fatigue was investigated with scanning and transmission electron microscopy. The alloy exhibits cyclic softening at diverse total strain amplitudes and loading temperatures. The material fatigue life obviously decreases with the increase of the strain amplitude at the same temperature. However, fatigue life increases and microstructure improves with temperature increase at the same strain amplitude. At certain loading temperatures and strain amplitudes, the microstructure can be refined. The fracture morphology changes gradually from brittle quasi-cleavage fracture, with numerous small cracks, to quasi-cleavage fracture with numerous small dimple gliding fractures.",

keywords = "Al-12Si-CuNiMg alloy, Cyclic softening, Fatigue, Microstructure evolution",

author = "Jinxiang Liu and Qing Zhang and Zhengxing Zuo and Yi Xiong and Fengzhang Ren and Volinsky, {Alex A.}",

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T1 - Microstructure evolution of Al-12Si-CuNiMg alloy under high temperature low cycle fatigue

AU - Liu, Jinxiang

AU - Zhang, Qing

AU - Zuo, Zhengxing

AU - Xiong, Yi

AU - Ren, Fengzhang

AU - Volinsky, Alex A.

PY - 2013/7/1

Y1 - 2013/7/1

N2 - Microstructure evolution of the Al-12Si-CuNiMg alloy under high temperature low cycle fatigue was investigated with scanning and transmission electron microscopy. The alloy exhibits cyclic softening at diverse total strain amplitudes and loading temperatures. The material fatigue life obviously decreases with the increase of the strain amplitude at the same temperature. However, fatigue life increases and microstructure improves with temperature increase at the same strain amplitude. At certain loading temperatures and strain amplitudes, the microstructure can be refined. The fracture morphology changes gradually from brittle quasi-cleavage fracture, with numerous small cracks, to quasi-cleavage fracture with numerous small dimple gliding fractures.

AB - Microstructure evolution of the Al-12Si-CuNiMg alloy under high temperature low cycle fatigue was investigated with scanning and transmission electron microscopy. The alloy exhibits cyclic softening at diverse total strain amplitudes and loading temperatures. The material fatigue life obviously decreases with the increase of the strain amplitude at the same temperature. However, fatigue life increases and microstructure improves with temperature increase at the same strain amplitude. At certain loading temperatures and strain amplitudes, the microstructure can be refined. The fracture morphology changes gradually from brittle quasi-cleavage fracture, with numerous small cracks, to quasi-cleavage fracture with numerous small dimple gliding fractures.

KW - Al-12Si-CuNiMg alloy

KW - Cyclic softening

KW - Fatigue

KW - Microstructure evolution

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DO - 10.1016/j.msea.2013.03.027

M3 - Article

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SN - 0921-5093

VL - 574

SP - 186

EP - 190

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Microstructure evolution of Al-12Si-CuNiMg alloy under high temperature low cycle fatigue

Abstract

Keywords

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