Influence from Size and Morphology of Mn5Si3 on Wear Resistance of Cu-Zn-Al-Mn-Si Alloys

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)3148–3157
Journal / PublicationMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume50
Issue number7
Online published2 May 2019
Publication statusPublished - Jul 2019

Abstract

In this study, the microstructure, hardness, and wear resistance of two kinds of copper alloy are demonstrated to be affected by both composition, annealing temperature, and phases present with a sliding block-on-ring test, where the ring is 316 stainless steel. With a higher content of Zn, the solubility of Mn and Si would decrease, resulting in increased volume fraction of the hard ω-Mn5Si3 phase (with a high nanoindentation hardness of 12.9 GPa). Moreover, the higher contents of Mn and Si lead to the formation of large primary polyhedron Pω-Mn5Si3 cylinders during solidification. With the help of two-stage forging, the primary polyhedron Pω-Mn5Si3 grow along [0001], enabling the large primary Mn5Si3 cylinders all parallel to each other. This special microstructure could significantly improve the wear resistance in comparison with the samples with a microstructure containing only small and randomly oriented precipitates. Such parallel primary polyhedron Pω-Mn5Si3 cylinders can act as reinforcements to grab the matrix, effectively improving the wear resistance.

Citation Format(s)

Influence from Size and Morphology of Mn5Si3 on Wear Resistance of Cu-Zn-Al-Mn-Si Alloys. / LIN, Y.H.; CHUANG, W.S.; HUANG, J.C. et al.
In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 50, No. 7, 07.2019, p. 3148–3157.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review