Al3Ti基金属间化合物高能球磨亚稳转变的热力学分析.pdf

第36卷第5期 仓属学级 V01．36NO．5 00 ACTAMETALLURGICASINICA 2 000 2 0年5月 May A13Ti基金属间化合物高能球磨亚稳转变的热力学分析 傅云义·，z) 胡赓祥·) 杨王明。) 剥、祖庆。’ 1)上海交通大学材料科学系，上海200030 2)北京科技大学材料科学与工程系，北京100083 摘 要 模型计算了合金呈有序金属间化合物、无序fcc固溶体和非晶态的形成自由能，分析了球磨导致的缺陷能及其亚稳转变的作用． 关键词 AlaTi基金属间化合物，高能球磨，无序化，非晶化，热力学 文献标识码 A 中图法分类号TGl39．8，0751 ON METAS— THERMoDYNAMICALANAI，ySISTHE TABLETRANSITIONSOFAMUI用I—PHASE A13Ti— CoMPoUNDDURING BASEDINTERMETALLIC HIGH—ENERGYBALL—MILLING FU Wangyue引，SUNZuqin92) Yunyil,2)，HUGengxiang¨，YANG ofMaterials 200030 1)DepartmentScience，ShanghaiJiaotongUniversity，Shanghai and ofScienceand 100083 ofMaterialsScience 2)Department Engineering，UniversityTechnologyBeijing，Beijing Correspondent：FU fu@yahoo．com received revisedform2000_01·03 Manuscript1999—10—15，in ABSTRACTThe and ofa wereob— A167MnsTi24Nblalloy disorderingamorphizingmulti-phase served toMiedematheoreticalmodelthefree duringhigh—energyball-millingprocess．According oftheordered fccsolidsolutionand were A167MnsTi24Nblalloy，disordered amorphous energies alloy calculated．Theand transitionscanbeunderstoodthe