Effect of metastable Cr(Mo)s/Cr(Mo)a powders on mechanical alloying the immiscible Cu–Mo–Cr system

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

1 Scopus Citations
View graph of relations

Author(s)

  • Chongfeng Sun
  • Shengqi Xi
  • Panpan Li
  • Yue Zhang
  • Xiaoxue Zheng

Detail(s)

Original languageEnglish
Pages (from-to)45-54
Journal / PublicationPhilosophical Magazine Letters
Volume98
Issue number2
Online published2 May 2018
Publication statusPublished - 2018

Abstract

Metastable-state alloy powders are usually synthesised by milling and occur as products of mechanical alloying (MA), but they are rarely used as starting materials for other MA processes. In this work, metastable-state alloy powders, including supersaturated solid-solution Cr(Mo)s and amorphous Cr(Mo)a were prepared in advance. Then, the Cr(Mo)s/Cr(Mo)a powder mixture was mechanically alloyed with elemental Cu to form Cu–Mo–Cr alloy. The effects of the metastable-state powder Cr(Mo)s/Cr(Mo)a on MA of the immiscible Cu–Mo–Cr system were evaluated. Phases and microstructures of the milled powders were analysed by XRD and TEM, respectively. The results show that amorphous Cu-60wt.%Cr(Mo) and supersaturated solid-solution Cu-20wt.%Cr(Mo) alloy powders can be synthesised by MA. It is concluded that MA of the Cu–Mo–Cr ternary alloy system is significantly promoted when elemental Cu powder is milled with metastable-state alloy powder Cr(Mo)s/Cr(Mo)a. Furthermore, the promoting effect of amorphous Cr(Mo)a on MA the Cu–Mo–Cr alloy system is much greater than that of supersaturated solid-solution Cr(Mo)s, during the milling process.

Research Area(s)

  • Cu–Mo–Cr, defects, diffusion, Mechanical alloying, metastable powders, TEM, XRD

Citation Format(s)

Effect of metastable Cr(Mo)s/Cr(Mo)a powders on mechanical alloying the immiscible Cu–Mo–Cr system. / Sun, Chongfeng; Xi, Shengqi; Li, Panpan et al.
In: Philosophical Magazine Letters, Vol. 98, No. 2, 2018, p. 45-54.

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