Elastic properties of Tin+1AlCn and Tin+1AlNn MAX phases

被引：48

作者：

Cover, Myles F. ^{[1
]}

Warschkow, Oliver ^{[1
]}

Bilek, Marcelo M. M. ^{[1
]}

McKenzie, David R. ^{[1
]}

机构：

[1] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia

来源：

ADVANCED ENGINEERING MATERIALS | 2008年 / 10卷 / 10期

关键词：

D O I：

10.1002/adem.200800109

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study was conducted to demonstrate the use of first principles density functional theory calculations, to investigate the elastic properties of the Tin+1AlXn(X=N,C) series as a function of n. The main objective of the study was, to identify optimum compositions that combine better machinability with high stiffness. The investigations considered Ti n+1AlXn system and reported calculated elastic constants, along with moduli for the stoichiometries n to 4. It was found that majority of the transition occurs between the 211 phase and the TiAl intermetallic, with relatively small variations across the MAX members, suggesting that the in-plane periodicity is dominated by the carbide/nitride slab. It was also observed that the MX slab is a stable structure that is unable to be influenced by Al layers.

引用

页码：935 / 938

页数：4

共 30 条

[1] The MN+1AXN phases:: A new class of solids;: Thermodynamically stable nanolaminates [J].