In-situ SEM investigation on fracture behavior of GTD222 superalloy during tensile process at 760 °C

Guoliang Zhu; Sitong Li; Rui Wang; Donghong Wang; Anping Dong; Da Shu; Liang Zhang; Baode Sun

Journal of Materials Research and Technology (Nov 2020)

In-situ SEM investigation on fracture behavior of GTD222 superalloy during tensile process at 760 °C

Guoliang Zhu,
Sitong Li,
Rui Wang,
Donghong Wang,
Anping Dong,
Da Shu,
Liang Zhang,
Baode Sun

Affiliations

Guoliang Zhu: Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
Sitong Li: School of Metallurgy, Northeastern University, Shenyang, 110819, China
Rui Wang: Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Corresponding author.
Donghong Wang: Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
Anping Dong: Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
Da Shu: Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
Liang Zhang: Shanghai Engineering Research Center of 3D Printing Materials, Shanghai Research Institute of Materials, Shanghai, 200437, China
Baode Sun: Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

Journal volume & issue: Vol. 9, no. 6
pp. 15185 – 15190

Abstract

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To characterize the fracture behaviors of the selective laser melting (SLM) processed GTD222 superalloy, in-situ scanning electron microscopy (SEM) observation was conducted during 760 °C tensile deformation. The results showed that the microcracks were mainly nucleated at the grain boundary and then propagating into the grain interior.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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