铸轧法制备钛铝复合板的界面组织与性能

• 作 者: 王文焱 史士钦 尚郑平 邵昌 黄文君 许开辉 谢敬佩 黄亚博 刘冀尧
• 机 构: 河南科技大学材料科学与工程学院,有色共性技术河南省协同创新中心,洛阳铜一金属材料发展有限公司,新疆闽龙耐磨材料有限公司,
• 出 处: 特种铸造及有色合金
• 发表日期: 2016年10期
• 关键词: Cast-rolling Method Ti/Al Composite Plate Microstructure Interface Layer

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。

The mechanical properties, interface, fracture morphology and phase analysis of the Ti / Al composite plate prepared by the casting method were studied by universal testing machine, MH-3 microhardness tester, optical microscope, SEM and EDS and XRD. The results show that the tensile strength of the Ti / Al composite plate produced by the casting method is 172.3 MPa, which is higher than the theoretical value of 135.6 MPa. The interfacial layer microhardness (HV) is between Ti and Al, The interface of the composite board is straight, the interfacial layer is mainly formed by the metallurgical bonding layer formed by diffusion, and a small amount of intermetallic compound TiAl3 is generated in the local area; warping and separation occur during the stretching, and the fracture of the two metals are both ductile fracture.