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Microstructure, Phase Transformation and Mechanical Property of Ni-Co-Mn-In Alloy Prepared by Spark Plasma Sintering

Year: 2015

Type: article

Abstract: The microstructure, phase transformation and mechanical property of Ni-Co-Mn-In alloy fabricated by powder metallurgical method were studied in the present investigation. The initial polycrystalline alloy was prepared by arc melting and then milled to fine particles, finally the powder particles were sintered by spark plasma sintering (SPS) method to make the bulk alloy with refined grains. The size of as-milled particles was much smaller than the grain size of the initial arc-melted alloy. The particles can be successfully densified to form a compact bulk by SPS. The initial arc-melted alloy presented a good martensitic transformation behavior, whereas the martensitic transformation of the as-sintered bulk alloy disappeared. The compressive strength and fracture strain of the as-sintered alloy greatly enhanced as compared to the initial arc-melted alloy due to the grain refinement and strengthening of grain boundaries.

Source: Materials science forum

DOI: 10.4028/www.scientific.net/msf.815.222

Authors: Bing Tian, Dong Cai Ren, Yun Xiang Tong, Feng Chen, Li Li, Yu Feng Zheng

Institution: Harbin Engineering University

Language: English

Topic: Shape Memory Alloy Transformations

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Funders: National Natural Science Foundation of China, China Postdoctoral Science Foundation, Natural Science Foundation of Heilongjiang Province, Fundamental Research Funds for the Central Universities

OpenAlex ID: W2062420780

FWCI:

Cites: 19

Cited by: 4

Related to: 10