Tensile properties of tungsten-modified orthorhombic Ti-22Al-20Nb-2W alloy

被引：33

作者：

Tang, F ^{[1
]}

Emura, S ^{[1
]}

Hagiwara, M ^{[1
]}

机构：

[1] Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan

来源：

SCRIPTA MATERIALIA | 2001年 / 44卷 / 04期

关键词：

titanium alloy; intermetallics; mechanical properties; microstructure;

D O I：

10.1016/S1359-6462(00)00636-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The tensile test of a W-modified β + O Ti-22Al-20Nb-2W alloy was conducted at temperatures ranging from room temperature to 950°C. the test results showed that: the 0.2% proof stress at first decreased slowly with increasing temperature and then decreased sharply over a critical temperature of 750°C; for the present alloy, the critical temperature over which the 0.2% proof stress dropped sharply was 100°C higher that the 650°C for the ternary β+O alloy without W; and the elongation-to-fracture increased with increasing temperature but showed a ductility 'valley' at 800°C.

引用

页码：671 / 676

页数：6

共 7 条

[1] A NEW ORDERED ORTHORHOMBIC PHASE IN A TI3AL-NB ALLOY [J].