A novel strategy to strengthen the hexagonal close-packed (HCP) alloys

Biaobiao Yang, Chenying Shi, Xianjue Ye, Jianwei Teng, Ruilin Lai, Yujie Cui, Dongfeng Shi, Dikai Guan, Guoqiang Xie, Yunping Li, Akihiko Chiba

Research output: Contribution to journalArticlepeer-review

Abstract

This work proposes a novel strengthening strategy for HCP alloy by fully utilizing the strengthening roles from texture and dual-precipitates in both basal and prismatic planes. The binary Mg-7Al (at%) alloy fabricated by such a strategy exhibits a superior combination of strength and strain hardening rate in major plastic strain ranges. Unlike conventionally fixed distribution of precipitate on given lattice plane, both basal and prismatic Mg17Al12 precipitates are firstly engineered to co-exist and reinforce Mg alloy. Additionally, this work reports the presence of a new precipitate morphology with a hammer-like geometric configuration for the first time to date. Further application and extension of this novel strengthening strategy to other HCP alloys, like Ti, Zr, are also discussed.

Original languageEnglish
Article number162346
JournalJournal of Alloys and Compounds
Volume893
DOIs
Publication statusPublished - 2022 Feb 10

Keywords

  • Hexagonal close-packed (HCP)
  • Mg-Al alloy
  • Precipitate
  • Twin

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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