Sn-58Bi合金连续挤压过程中的组织及性能演变<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.012.019

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Abstract The Sn-58Bi alloy wires were fabricated by continuous extrusion technology. The microstructure and property evolution of the Sn-58Bi alloy during continuous extrusion were researched. The results showed that Sn matrix was elongated along the extrusion direction and the Bi phase was in band-like distribution in friction-shearing region. The Bi phase seems like coarser cluster structure in the upsetting deformation region. The dynamic recrystallization began to occur and Bi phase turns into rosette structure in the adhesion region. The dynamic recrystallization was completed and resulted in finer recrystallization structure in the right-angle bending region. The Vickers hardness of Sn-58Bi alloy increased with the increasing deformation during continuous extrusion except in the right-angle bending region. The tensile strength and elongation of alloy increase with the increase of the extrusion ratio. Analysis has indicated that the fracture of Sn-58Bi alloy wire was caused by inter-phase separation between the tin and bismuth phase and broken of bismuth.

Key words： Sn-58Bi alloy wire continuous extrusion microstructure mechanical property fracture characteristics

Published: 08 May 2018

CLC number:

TG115.28

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	Articles by authors
	YIN Jiancheng
	ZHANG Baqi
	LIU Lina
	CHEN Yegao
	WANG Liqiang
	YANG Huan
	ZHONG Yi

Cite this article:

YIN Jiancheng,ZHANG Baqi,LIU Lina, et al. Microstructure and Property Evolution of Sn-58Bi Alloy During Continuous Extrusion[J]. Materials Reports, 2017, 31(12): 89-92.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.012.019 OR http://www.mater-rep.com/EN/Y2017/V31/I12/89

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