铸轧法制备钛铝复合板的界面组织与性能  

Interfacial Microstructure and Properties of Ti-Al Rolling-casted Composite Plate

作　　者：王文焱[1,2] 史士钦 尚郑平 邵昌 黄文君 许开辉[1] 谢敬佩[1,2] 黄亚博[1] 刘冀尧 Wang Wenyan Shi Shiqin Shang Zhengping Shao Chang Huang Wenjun Xu Kaihui Xie Jingpei Huang Yabo Liu Jiyao(School of Materials Science and Engineering, Henan University of Science and Technology Collaborative Innovation Center of Nonferrous Metals Henan Province Luoyang Copper One Metal Material Development Co. , Ltd. Xinjiang Minlong Wear-resisting Material Co. , Ltd.)

机构地区：[1]河南科技大学材料科学与工程学院 [2]有色共性技术河南省协同创新中心 [3]洛阳铜一金属材料发展有限公司 [4]新疆闽龙耐磨材料有限公司

出　　处：《特种铸造及有色合金》2016年第10期1084-1088,共5页Special Casting & Nonferrous Alloys

基　　金：河南省重大科技专项资助项目(102105000007)

摘　　要：通过万能试验机、MH-3显微硬度计、光学显微镜、SEM以及EDS和XRD研究了采用铸轧法制备的Ti/Al复合板的力学性能、界面和断口形貌及物相分析。结果表明,铸轧法生产的Ti/Al复合板抗拉强度为172.3 MPa,大于理论值135.6 MPa;界面层显微硬度(HV)介于Ti、Al之间,局部由于生成TiAl3而高达450;复合板的界面呈平直状,界面层主要是由扩散形成的冶金结合层,局部区域有少量的金属间化合物TiAl3生成;拉伸时出现翘曲和分离现象,两种金属的断裂均为韧性断裂。Mechanical properties,interface,fracture morphology and composition analysis of the Ti-Al composite plate prepared by cast-rolling method were investigated by universal testing machine,MH-3micro hardness meter,optical microscope,SEM and EDS and XRD.The results indicate that the tensile strength of Ti-Al composite plate prepared by cast-rolling method reaches 172.3MPa,which is the greater than the theoretical value of 135.6 MPa.Micro hardness of the interface layer is between the two metals,and mico-hardness in partial zone reaches 450 HV due to generating TiAl3 phase.The interface layer exhibits flat-straight structure,which is formed mainly metallurgical bonding layer by diffusion,and there exists a small amount of intermetallic compound TiAl_3 generated in partial zone.There is a phenomenon of warping and separation when the composite plate is stretched,and the fracture of the two metals is characterized by ductile fracture.

关 键 词：铸轧法 钛铝复合板 微观组织 界面层 

分 类 号：TG335.9[金属学及工艺—金属压力加工] TG335.81