Behavior of inclusions in nickel-base P/M superalloy under tensile load

CENG Yanping; DONG Jianxin; ZHANG Maicang; ZHANG Lina; XIE Xishan

doi:10.13374/j.issn1001-053x.2005.02.049

Volume 27 Issue 2

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CENG Yanping, DONG Jianxin, ZHANG Maicang, ZHANG Lina, XIE Xishan. Behavior of inclusions in nickel-base P/M superalloy under tensile load[J]. Chinese Journal of Engineering, 2005, 27(2): 202-204. doi: 10.13374/j.issn1001-053x.2005.02.049

Citation:

CENG Yanping, DONG Jianxin, ZHANG Maicang, ZHANG Lina, XIE Xishan. Behavior of inclusions in nickel-base P/M superalloy under tensile load[J]. Chinese Journal of Engineering, 2005, 27(2): 202-204. doi: 10.13374/j.issn1001-053x.2005.02.049

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Behavior of inclusions in nickel-base P/M superalloy under tensile load

doi: 10.13374/j.issn1001-053x.2005.02.049

1. High-Temperature Materials Research Laboratories, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Received Date: 2004-04-21
Rev Recd Date: 2004-10-15

Available Online: 2021-08-17

Abstract

Abstract

In situ tensile tests with special designed SEM were conducted to trace the whole process of crack initiation and propagation till to fracture of Al₂O₃ seeded P/M Rene 95 Ni-base superalloy. The experimental results show that a non-metallic inclusion can induce crack initiation. When the inclusion size is larger than a certain critical size, the crack can propagate to be the main crack inducing the specimen to fracture. Consequentially, both the yield strength and the tensile strength of the specimen are remarkably decreased.
- P/M Ni-base superalloy,
- inclusion,
- crack initiation and propagation,
- fracture