摘要
采用高能行星球磨的方法研究了成分为ＦｅｘＳｉ１－ｘ（ｘ＝０．３０～０．７５）的纯元素混合粉末的机械合金化过程。对球磨不同时间粉末的结构分析和组织观察表明：Ｆｅ７５Ｓｉ２５粉末经球磨形成具有ｂｃｃ结构的纳米晶α固溶体，此α固溶体的晶粒尺寸和晶格常数随球磨时间的延长而减少。Ｆｅ５０Ｓｉ５０粉末的球磨产物为单相ＦｅＳｉ化合物，而Ｆｅ３０Ｓｉ７０混合粉末的球磨产物为α＋ＦｅＳｉ＋β－ＦｅＳｉ２三相混合结构。在研究的成分范围内无非晶化发生，对此进行了热力学分析。
The process of mechannical alloying of elemental powder mixtures of Fe xSi 1-x (X=0.30～0.75)is studied with a high energy planetary ball milling.After the structure analasis of powders at different milling time,it showed that nanocrystal α Fe(Si)Solid solution(bcc)was formed during the milling of Fe 75 si 25 powders,the lattice spacing and grain size of α Fe(Si)decreased with increase of milling time.The milling products of Fe 50 si 50 and Fe 30 si 70 were FeSi compounds and three phases mixture α+FeSi+β FeSi 2,respectively.There was no amorphous product in the studying composition range and a thermodynamics analysis was perfermed.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
1997年第3期165-168,共4页
Powder Metallurgy Technology
