Martensite in a TiAl alloy quenched from beta phase field

被引：45

作者：

Hu, D. ^{[1
]}

Jiang, H. ^{[2
]}

机构：

[1] Univ Birmingham, Interdisciplinary Res Ctr Mat, Birmingham B15 2TT, W Midlands, England

[2] Oxford Instruments, High Wycombe HP12 3SE, Bucks, England

来源：

INTERMETALLICS | 2015年 / 56卷

基金：

英国工程与自然科学研究理事会;

关键词：

Titanium aluminides; based on TiAl; Martensitic transformation; Phase transformation; Microstructure; Electron backscatter diffraction; Electron microscopy; scanning; TRANSMISSION ELECTRON-MICROSCOPY; GAMMA-TITANIUM ALUMINIDE; LENTICULAR MARTENSITE; TRANSFORMATION; DESIGN; PLATE; ORIENTATION; EQUILIBRIA; DEFECTS; GROWTH;

D O I：

10.1016/j.intermet.2014.09.007

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hexagonal martensite with well-developed midribs was obtained by iced-brine quenching of Ti44Al4Nb4Hf0.1Si from the beta phase field. Crystallographic characterisation shows great resemblances of the martensite in this alloy to the lenticular martensite in Fe-Ni alloys in the morphology and substructures of martensite plates. It also bears similarities with the martensite in titanium and its alloys in habit planes and orientation relationship with parent phase. Martensitic transformation under the conditions employed in this work was incomplete and the remaining beta phase after martensitic transformation, thus, underwent diffusional beta-to-alpha transformation or massive transformation, depending on the local circumstances. (c) 2014 Elsevier Ltd. All rights reserved.

引用

页码：87 / 95

页数：9

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