Study on Evolution of Ti-containing Intermetallic Compounds in Alloy 2618-Ti during Homogenization

被引：3

作者：

Wang, Jianhua ^{[1
]}

Liu, Tingting ^{[1
]}

Liu, Ya ^{[1
]}

Wu, Changjun ^{[1
]}

Su, Xuping ^{[1
]}

机构：

[1] Changzhou Univ, Sch Mat Sci & Engn, Changzhou 213164, Jiangsu, Peoples R China

来源：

HIGH TEMPERATURE MATERIALS AND PROCESSES | 2015年 / 34卷 / 07期

基金：

中国国家自然科学基金;

关键词：

aluminum alloys; ternary system; phase transitions; phase equilibria; diffusion; MECHANICAL-PROPERTIES; CREEP-BEHAVIOR; MICROSTRUCTURE;

D O I：

10.1515/htmp-2014-0136

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dispersive Al3Ti particles introduced into alloy 2618-Ti are enclosed gradually by ternary Al18Mg3Ti2 phase during homogenization, which can be described as a "peritectic reaction". This reaction is sensitive to homogenization temperature and time within 24 h but not so -sensitive to homogenization time after 24 h because of its special growth pattern. The evolution of the intermetallic compounds during homogenization process of alloy 2618-Ti is further confirmed by means of diffusion couple of (Al-25Mg)/(Al-10Ti). After homogenization, much Al3Ti particles coexist with Al18Mg3Ti2 which depends on the composition of Al-Mg-Ti system and only a few single Al18Mg3Ti2 appear. The occurrence of single Al18Mg3Ti2 phase, within which Al3Ti disappears, can be attributed to the local fluctuation of alloy compositions.

引用

页码：621 / 625

页数：5

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