Achieving superplasticity in TiAl alloy via one-step powder metallurgy

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-06-25 DOI:10.1016/j.intermet.2025.108899

Hao Chen , Zhenxin Duan , Yuxin Shen , Liping Liu , Huiliang Shao , Xiaolei Song , Ying Han

引用次数: 0

Abstract

This study proposes a one-step powder metallurgy approach to fabricate homogeneous and fine-grained Ti-48Al-2Cr-2Nb alloy, achieving exceptional superplasticity with an elongation of 236.7 % at 900 °C and a strain rate of 1 × 10⁻⁴ s⁻¹. The superplastic deformation is governed by the grain boundary sliding, the synergistic effect of twinning and dynamic recrystallization.

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一步粉末冶金法实现TiAl合金的超塑性

本研究提出了一种一步粉末冶金方法来制备均匀和细晶粒的Ti-48Al-2Cr-2Nb合金，在900°C时获得了236.7%的延伸率和1 × 10−4 s−1的应变速率。超塑性变形主要受晶界滑动、孪晶和动态再结晶的协同作用控制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.