Effect of alloying element,Cr, on the burning behavior of titanium alloys

被引：0

作者：

Zhao, YQ ^{[1
]}

Zhou, L

Deng, J

机构：

[1] NW Inst Nonferrous Met Res, Xian 710016, Peoples R China

[2] Northeastern Univ, Shenyang 110006, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 1999年 / 28卷 / 03期

关键词：

titanium alloy; titanium burn; alloying element; Cr; burn resistant titanium alloy;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The alloys Ti - 35V - 15Cr(c) and Ti - 25V - 15Cr - 0.2Si(Ti40) exhibit good burn resistance , however,the influence of the alloying element,Cr,on alloy burning behavior is not clear. Effect of alloying element,Cr , on titanium alloy burning behavior is studied by means of the direct current simulation burn(DCSB) ignition method. The results indicate that the burn resistance is improved as the Cr content is increased beyond 10%,even more so beyond 15%. However,Ti -Cr binary alloys do not reveal burn resistant behavior. The reason is that the burned Ti -Cr alloy surface is porous and cracked ,and the interface between burned product and the matrix is the same as it is when the Cr content is less than 10%,which is insufficient to retard oxygen diffusion into the matrix. But the interface of Ti -(>10)Cr alloys is rich in Cr, and the oxide film is tenacious and able to retard oxygen diffusion into the matrix thereby decreasing the burning velocity. The burned products of Ti - Cr alloys are TiO2 , TiO and TiCrO3.

引用

页码：132 / 135

页数：4