摘要
以一种新方法在低温、低搅拌条件下成功地制备了几种成分的 ＡＩ－Ｔｉ－Ｃ中间合金，并采用 Ｘ射线衍射（ＸＲＤ）、扫描电镜（ＳＥＭ）和能谱分析（ＥＤＳ）等手段对中间合金的相组成和显微组织进行了综合分析．结果表明，Ａｌ－Ｔｉ－Ｃ中间合金中的第二相粒子为块状 Ａｌ_３Ｔｉ和亚微米尺寸的非整比化合物 ＴｉＣ_ｘ，其中ｘ在 ０．４９—０．７８之间不等．细化结果表明，Ａｌ－Ｔｉ－Ｃ对工业纯铝具有良好的晶粒细化效果，细化组织的晶粒核心为Ｔｉ，Ｃ化合物粒子．
Al-Ti-C master alloys have been prepared with a novel production method. X-ray diffraction,SEM and EDS were used to examine the phases and microstructures of the master alloys. The master alloys have block-like Al_3Ti particles and submicron size TiC_x with x ranging from 0.49 to 0.78, and show excellent grain refining performance for commercially pure aluminum. Tianium carbides were observed at the crystallization centers in refined castings.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第4期341-346,共6页
Acta Metallurgica Sinica
基金
国家"九五"攻关项目!98-A28-01-18
