拉伸-扭转变形下α相α〃-马氏体的异常析出行为

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Philosophical Magazine Letters Pub Date : 2022-01-12 DOI:10.1080/09500839.2021.2023773

Siqian Zhang, Liangzi Huo, Lijia Chen

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引用次数: 0

摘要

摘要用透射电子显微镜（TEM）研究了近β钛合金在不同热处理后的拉伸-扭转性能和变形组织。在500°C下时效处理8h后，由于薄的α”板均匀分布在β晶粒中，样品的强度明显高于其他不同处理的样品。有趣的是，在拉伸-扭转变形下，首次在α板中观察到α〃-马氏体的析出。异常的析出行为主要归因于较大的拉剪应力。

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Abnormal precipitation behaviour of α″-martensite from α-phase under tension–torsion deformation

ABSTRACT The tension–torsion properties and deformation microstructure of near β titanium alloy after various heat treatment have been investigated by transmission electron microscopy (TEM). The samples after aging treatment at 500°C for 8 h possesses obviously higher strength than those samples undergoing other different treatment on account of thin α” plates distributing uniformly in the β grains. Interestingly, precipitation of α″-martensite in α plates were observed for the first time under tension–torsion deformation. The abnormal precipitation behaviour was attributed mainly to the large tensile-shear stress.

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来源期刊

Philosophical Magazine Letters 物理-物理：凝聚态物理

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

2.7 months

期刊介绍： Philosophical Magazine Letters is the rapid communications part of the highly respected Philosophical Magazine, which was first published in 1798. Its Editors consider for publication short and timely contributions in the field of condensed matter describing original results, theories and concepts relating to the structure and properties of crystalline materials, ceramics, polymers, glasses, amorphous films, composites and soft matter. Articles emphasizing experimental, theoretical and modelling studies on solids, especially those that interpret behaviour on a microscopic, atomic or electronic scale, are particularly appropriate. Manuscripts are considered on the strict condition that they have been submitted only to Philosophical Magazine Letters , that they have not been published already, and that they are not under consideration for publication elsewhere.