Effect of hot isostatic pressing on microstructure of cast gas-turbine vanes of K452 alloy

Effect of hot isostatic pressing on microstructure of

cast gas-turbine vanes of K452 alloy

Jie Li;Chao Yuan;Jianting Guo;Jieshan Hou;Lanzhang Zhou

【期刊名称】《自然科学进展（英文版）》 【年(卷),期】2014(000)006

【摘要】The effect of hot isostatic pressing (HIP) treatment on microstructure of gas-turbine vanes made of K452 alloy was investigated by OM, SEM and TEM. The results showed that HIP treatment played a great role in the porosity healing processing, where 80%of porosities were eliminated and the diameter of remnant porosities decreased to 10μm. The healing mechanism of the porosities was consistent with existing theories of porosity closure based on vacancy diffusion. According to the result of the tensile test, the plasticity of the alloy was improved as the result of the elimination of the porosities and the improvement of dendritic segregation, while there was not an obvious improvement in the tensile strength after the programmed HIP process. In addition, HIP had a positive effect on narrowing down the dispersion of tensile properties. 【总页数】6页(631-636) 【关键词】

【作者】Jie Li;Chao Yuan;Jianting Guo;Jieshan Hou;Lanzhang Zhou 【作者单位】Institute of Mental Research, Chinese Academy of Sciences,

Shenyang 110016, China;Institute of Mental Research, Chinese Academy of Sciences, Shenyang 110016, China;Institute of Mental Research, Chinese Academy of Sciences, Shenyang 110016, China;Institute of Mental Research, Chinese Academy of Sciences, Shenyang 110016, China;Institute of Mental Research, Chinese Academy of Sciences, Shenyang 110016, China 【正文语种】英文 【中图分类】 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_progress-natural-sciencematerials-international_thesis/020121168507.html 【相关文献】

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