柔性三元碳化物增强Ti-Al系金属间化合物的研究进展  

Research progress of Ti-Al intermetallics reinforced by flexible ternary carbides

作　　者：艾桃桃[1,2] 王芬[2] 

机构地区：[1]陕西理工学院材料科学与工程学院,陕西汉中723003 [2]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《金属热处理》2015年第2期20-25,共6页Heat Treatment of Metals

基　　金：国家自然科学基金青年科学基金(51201094);陕西省自然科学基金(2012JM6018);陕西省青年科技新星科技计划项目(2014KJXX-75)

摘　　要：Ti-Al系金属间化合物被认为是极具发展潜力的高温轻合金,但是室温塑性差和脆性大,超过850℃氧化抗力不足等问题严重阻碍了其实用化进程。复合化技术作为一种高效手段被广泛用于制备Ti-Al基金属间化合物,此时增强相的类型影响着产物的性能。与大多数脆性硬质陶瓷相相比,柔性层状三元化合物Mn+1AXn(简称MAX)兼具金属和陶瓷的双重优异特性,是Ti-Al系金属间化合物最为理想的增强相。本文主要介绍了国内外关于MAX相增强Ti-Al系金属间化合物的研究现状,以期为其他研究者提供一种思路,进一步推动高性能Ti-Al系金属间化合物的发展。Ti-Al intermetallics are considered as potential high-temperature alloys. But the applications are limited by their low room temperature ductility and fracture toughness at ambient temperature, and low oxidation resistance above 850 %. Compound technology is an efficient way to be used for producing Ti-Al matrix intermetallics, and the type of reinforcements influences on the properties of the products. Compared to the most of brittle hard ceramic phases, flexible MAX compounds combine unusual properties of both metals and ceramics, and are known as the most ideal reinforcements for Ti-Al matrix intermetallics. In this paper, the progress of Ti-Al intermetallics reinforced by MAX phases is introduced, which is aimed to promote the development of high-performance Ti-Al intermetallics.

关 键 词：三元碳化物 TI-AL系金属间化合物 增强 

分 类 号：TG146.2[一般工业技术—材料科学与工程]