摘要
利用选区电子衍射和会聚束电子衍射测定了一种 Ｔｉ－Ａｌ－ＳＣ三元化合物的晶体结构．结果表明，该化合物属于体心立方结构，点阵常数 ａ＝０．９８４ｎｍ，空间群为 Ｉａ３ｄ． Ｘ射线能谱分析表明此相的化学成分为（Ｓｃ， Ｔｉ）３Ａｌ．
The crystal structure of a novel Ti-Al-Sc phase has been determined by transmission electron microscopy (TEM) and convergent beam electron diffraction (CBED) in the Sc-doped TiAl alloy. The phase shows particle or strip morphology with the composition (Sc, Ti)(3)Al. The crystal structure is bcc with a=0.984 nm, point group m3m and space group Ia3d.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第3期225-229,共5页
Acta Metallurgica Sinica
