期刊论文

THE OXIDATION BEHAVIOR OF TWO ALLOYING Ti-Al ALLOY

中文

北京师范大学学报（自然科学版）

JOURNAL OF BEIJING NORMAL UNIVERSITY(NATURAL SCIENCE)

0476-0301

1999

35

2

195-199

10.3321/j.issn:0476-0301.1999.02.012

北京市自然科学基金!2982004；

本校为其他机构

研究了2种合金化的Ti－Al合金Ti-48Al—2Cr—2Nb和Ti-47Al-1Cr—1V—2．5Nb（合金含量均为原子分数）在800和900℃的恒温氧化行为，分析探讨了它们的高温氧化特征及合金元素对其高温氧化性能的影响．研究发现：800℃时，二合金化Ti－Al合金的抗氧化性能要比二元Ti—48Al（以下简称为48Al）合金的差；900℃时，其抗氧化性能得到了很大改善，氧化反应速率远低于二元48Al合金；2种温度下，Ti－48Al—2Cr—2Nb合金的抗氧化性能始终优于Ti－47Al-1Cr—1V—2．5Nb合金；合金元素的加入是通过改变合金基体的显微组织及氧化层的结构来影响其高温氧化性能的．

The isothermal oxidation behavior of two kinds of alloying Ti- Al alloy: Ti-48Al- 2Cr- 2Nb and Ti- 47Al- 1Cr- 1V- 2.5Nb at 800 ℃ and 900 ℃ is investigated. Their high temperature oxidation character and the influence of the alloying element upon the oxidation behavior are discussed. The study shows that the oxidation resistance of two alloying Ti- Al alloy at 800℃ is poorer than that of 48Al. However, their oxidation properties at 900℃ are considerably improved, and the oxidation sped is much lower than that of 48Al alloy. At the two oxidat...