Effect of Zr and Si addition on high temperature mechanical properties of near-α Ti-Al-Zr-Sn based alloys

被引：49
作者：
Jayaprakash, M. [1 ]
Ping, D. H. [1 ]
Yamabe-Mitarai, Y. [1 ]
机构：
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 612卷
关键词：
Ti alloy; Compression test; Microstructure; Transmission electron microscopy (TEM); Yielding strength; SILICIDE PRECIPITATION; TENSILE PROPERTIES; MICROSTRUCTURE; TITANIUM; BEHAVIOR;
D O I：
10.1016/j.msea.2014.06.078
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The mechanical properties and microstructural evolution of Ti-Al-Zr-Sn based near alpha-Ti alloys with various amounts of Zr and Si have been systematically investigated. The compression test results reveal that higher contents of Zr and Si can improve the yielding strength both at room temperature and high temperature (650 degrees C). The enhanced yield strength was found to be contributed mainly by fine suicide precipitates (Ti5Si3). Zr was enriched in the suicide formed at alpha-lath boundaries. The microstructural characterization of the alloys with various alloying elements has been studied using transmission electron microscopy (TEM). (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：456 / 461
页数：6
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