High‐temperature low‐cycle fatigue behaviour of a cast Al–12Si–CuNiMg alloy

Qing Zhang, Zhengxing Zuo, Jinxiang Liu

doi:10.1111/ffe.12029

High‐temperature low‐cycle fatigue behaviour of a cast Al–12Si–CuNiMg alloy

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Qing Zhang

School of Mechanical Engineering Beijing Institute of Technology Beijing 100081 China
Zhengxing Zuo

School of Mechanical Engineering Beijing Institute of Technology Beijing 100081 China
Jinxiang Liu

School of Mechanical Engineering Beijing Institute of Technology Beijing 100081 China

書誌事項

公開日: 2013-03-11

権利情報

http://onlinelibrary.wiley.com/termsAndConditions#vor

DOI

10.1111/ffe.12029

公開者: Wiley

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説明

<jats:title>ABSTRACT</jats:title><jats:p>The low‐cycle fatigue behaviour of a cast Al–12Si–CuNiMg alloy, with a high content of Si, is investigated at 200, 350 and 400 °C. The fatigue test results show that the alloy exhibits symmetrical hysteresis loops, moderate cyclic softening and higher fatigue resistance at higher temperature. The fracture surface analysis reveals that more tear ridges are formed at higher temperature, which strongly affect the fatigue resistance. Furthermore, evaluation of the material fatigue resistance using an energy‐based Halford–Marrow model indicates that the material's ability to absorb and dissipate plastic strain energy is enhanced as temperature increases.</jats:p>