Microstructure and mechanical characteristics of Cu-12.5Ni-5Sn-xFe sintered alloys

Xiaochao Wang; Zhen Li; Sanming Du; Jingbo Wang; Yongzhen Zhang

doi:10.1515/ijmr-2020-8002

Article

Microstructure and mechanical characteristics of Cu-12.5Ni-5Sn-xFe sintered alloys

Xiaochao Wang , Zhen Li , Sanming Du , Jingbo Wang and Yongzhen Zhang

Published/Copyright: February 19, 2021

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From the journal International Journal of Materials Research Volume 112 Issue 2

Abstract

The Cu-12.5Ni-5Sn-xFe alloys were prepared using powder metallurgy. The effect of the amount of Fe addition on the microstructure and mechanical characteristics of Cu-12.5Ni-5Sn-xFe alloys was investigated. The microstructure and morphology of alloys were examined by means of X-ray diffraction, scanning electron microscopy and cold field emission scanning electron microscope. Results indicate that the hardness and yield strength of the Cu-12.5Ni-5Sn alloy are improved by addition of trace amounts of Fe. The lamellar precipitates of Cu-12.5Ni-5Sn-xFe alloys are more and finer compared to those of Cu-12.5Ni-5Sn alloy. Fe can facilitate the aging process and strengthen the effect of aging-hardening.

Keywords: Cu-12.5Ni-5Sn-xFe alloys; Lamellar precipitates; Mechanical properties

Zhen Li, PhD National United Engineering Laboratory for Advanced Bearing Tribology Henan University of Science and Technology No. 263 Kaiyuan Road Luoyang 471023 P. R. China Tel.: +86 379 64231003 Fax: +86 379 64231003 lizhen@haust.edu.cn

Co-first authors: Xiaochao Wang and Zhen Li contributed equally to the paper.

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Received: 2020-07-23

Accepted: 2020-10-21

Published Online: 2021-02-19

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Articles in the same Issue

https://doi.org/10.1515/ijmr-2020-8002

Keywords for this article

Cu-12.5Ni-5Sn-xFe alloys; Lamellar precipitates; Mechanical properties