X-ray diffraction study on phase transformation of Ti-22Al-23Nb-1Mo-1Zr alloy during high-pressure torsion Röntgenbeugungsuntersuchung zur Phasenumwandlung einer TiAl22Nb23Mo1Zr1-Legierung unter Hochdrucktorsion

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-09-05 DOI:10.1002/mawe.70020

J. W. Cheng, Q. L. Rao, C. X. Li

引用次数: 0

Abstract

Titanium aluminum niobium-based alloy is one of the most promising high-temperature structural materials in aerospace field, whose phase transformation mechanism has been extensively studied. In this paper, the lamellar O-phase of Ti-22Al-23Nb-1Mo-1Zr alloy is found being transformed to B2-phase at ambient temperature by high-pressure torsion. Further x-ray diffraction investigation shows that such transformation is related to the accumulation of lattice strain in the O-phase. When the lattice strain in the O-phase accumulates to an upper limit, the O-phase will be transformed into the B2-phase by shear transformation. Finally, the mechanism of phase transformation is discussed.

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Ti-22Al-23Nb-1Mo-1Zr合金在高压扭转下相变的x射线衍射研究

钛铝铌基合金是航空航天领域最具发展前景的高温结构材料之一，其相变机理得到了广泛的研究。本文发现Ti-22Al-23Nb-1Mo-1Zr合金的片层o相在常温下经高压扭转转变为b2相。进一步的x射线衍射研究表明，这种转变与o相中晶格应变的积累有关。当o相的晶格应变累积到上限时，o相将通过剪切转变转变为b2相。最后，讨论了相变机理。

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

Materialwissenschaft und Werkstofftechnik 工程技术-材料科学：综合

CiteScore

2.10

自引率

9.10%

发文量

154

审稿时长

4-8 weeks

期刊介绍： Materialwissenschaft und Werkstofftechnik provides fundamental and practical information for those concerned with materials development, manufacture, and testing. Both technical and economic aspects are taken into consideration in order to facilitate choice of the material that best suits the purpose at hand. Review articles summarize new developments and offer fresh insight into the various aspects of the discipline. Recent results regarding material selection, use and testing are described in original articles, which also deal with failure treatment and investigation. Abstracts of new publications from other journals as well as lectures presented at meetings and reports about forthcoming events round off the journal.