中国有色金属学报（英文版）
中國有色金屬學報（英文版）
중국유색금속학보（영문판）
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2011年
z2期
333-337
,共5页
房文斌%李学问%孙宏飞%丁永峰
房文斌%李學問%孫宏飛%丁永峰
방문빈%리학문%손굉비%정영봉
Ti-50％Al复合粉末%显微结构%高能球磨
Ti-50％Al複閤粉末%顯微結構%高能毬磨
Ti-50％Al복합분말%현미결구%고능구마
Ti-50％Al composite powder%microstructure%high energy ball milling
采用高能球磨法制备了Ti-50％Al(摩尔分数)复合粉末,利用SEM、TEM、HREM、HAADF-STEM分析手段对复合粉末颗粒的表面形貌、结构及组成进行了表征.在球磨过程中钛、铝之间逐渐发生反应并形成无序的Ti/Al相；球磨9h后铝逐渐融入钛中,产生纳米晶钛铝固溶体,同时引起大量高密度位错.合金化后粉末的元素组成接近原始成分,但分布极不均匀.
採用高能毬磨法製備瞭Ti-50％Al(摩爾分數)複閤粉末,利用SEM、TEM、HREM、HAADF-STEM分析手段對複閤粉末顆粒的錶麵形貌、結構及組成進行瞭錶徵.在毬磨過程中鈦、鋁之間逐漸髮生反應併形成無序的Ti/Al相；毬磨9h後鋁逐漸融入鈦中,產生納米晶鈦鋁固溶體,同時引起大量高密度位錯.閤金化後粉末的元素組成接近原始成分,但分佈極不均勻.
채용고능구마법제비료Ti-50％Al(마이분수)복합분말,이용SEM、TEM、HREM、HAADF-STEM분석수단대복합분말과립적표면형모、결구급조성진행료표정.재구마과정중태、려지간축점발생반응병형성무서적Ti/Al상；구마9h후려축점융입태중,산생납미정태려고용체,동시인기대량고밀도위착.합금화후분말적원소조성접근원시성분,단분포겁불균균.
The Ti-50％Al (molar fraction) composite powder was synthesized by high energy ball milling (HEBM).The characteristics of the composite particles,including surface morphology,structure and components,were investigated by scanning electron microscopy (SEM),transmission electron microscopy (TEM),high resolution electron microscopy (HREM) and high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM).The mechanochemical reaction between Ti and Al gradually took place through intermediate stages during milling,and resulted in the formation of disordered Ti/Al phases.Dissolution of Al in Ti (after 9 h milling),nanocrystalline Ti/Al solid solution and high density of dislocations were caused by HEBM.The element distribution of the mechanically alloyed Ti-50％Al composite powder was close to the initial composition,but the distribution was inhomogeneous.
