Effect of Microstructure on Stress Rupture Property in Fine Grain Cast Inconel 718 Alloy

Ma Yue; Hu Yaohe; Xie Xishan; Sun Jiahua; Zhao Jingchen

doi:10.13374/j.issn1001-053x.1999.03.010

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Article Navigation > Chinese Journal of Engineering > 1999 > 21(3): 251-254

Ma Yue, Hu Yaohe, Xie Xishan, Sun Jiahua, Zhao Jingchen. Effect of Microstructure on Stress Rupture Property in Fine Grain Cast Inconel 718 Alloy[J]. Chinese Journal of Engineering, 1999, 21(3): 251-254. doi: 10.13374/j.issn1001-053x.1999.03.010

Citation:

Ma Yue, Hu Yaohe, Xie Xishan, Sun Jiahua, Zhao Jingchen. Effect of Microstructure on Stress Rupture Property in Fine Grain Cast Inconel 718 Alloy[J]. Chinese Journal of Engineering, 1999, 21(3): 251-254. doi: 10.13374/j.issn1001-053x.1999.03.010

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Effect of Microstructure on Stress Rupture Property in Fine Grain Cast Inconel 718 Alloy

doi: 10.13374/j.issn1001-053x.1999.03.010

1. Material Science and Engineering School, UST Beijing, Beijing 100083, China;
2. Central Iron&Steel Research Institute, Beijing 100083, China

Received Date: 1998-07-23
Available Online: 2021-08-27

Abstract

Abstract

The effect of microstructure on stress rupture property in fine cast IN 718 alloy having grain size of ASTM 3~5 has been investigated. Intergranular fracture as a main kind of creep fracture, and most of Laves phase, δ phase and carbides positioning in grain boundary in fine grain cast material have been found by analyzing the stress rupture fractograph and microstructure. The test results has exprienced that carbides and Laves phase in grain boundary will cause reducation of stress rupture properties.
- fine grain cast,
- microsmicture,
- stress rupture property