Ti/Al微叠层复合板单向拉伸与胀形性能  

Uniaxial Tensile and Bulging Properties of Ti/Al Micro-laminated Composite Sheet

作　　者：李渤渤 樊江昆[1] 许亚利 黄正皓 林鹏[3] 高福洋 陶会发 李金山[1] 王非 王哲 Li Bobo;Fan Jiangkun;Xu Yali;Huang Zhenghao;Lin Peng;Gao Fuyang;Tao Huifa;Li Jinshan;Wang Fei;Wang Zhe(State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China;Luoyang Ship Material Research Institute,Luoyang 471023,China;College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072 [2]中国船舶集团有限公司第七二五研究所,河南洛阳471023 [3]太原理工大学材料科学与工程学院,山西太原030024

出　　处：《稀有金属材料与工程》2025年第1期218-223,共6页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(52074231,52274396)。

摘　　要：采用真空热压法制备了Ti/Al微叠层复合板,其微观结构为Ti/TiAl_(3)/Al层交替排列。采用单向拉伸与气压胀形实验对其高温单向拉伸变形行为与胀形性能进行了研究。结果表明,15 min热压复合板由于硬脆相TiAl_(3)层较薄,表现出较好的塑性变形能力。复合板高温变形时,裂纹出现钝化,阻碍其在TiAl_(3)层中进一步扩展,使得复合板在600℃时表现出135%的伸长率和45%的极限胀形率。胀形球壳顶部区域,Ti层和Al层均发生较大程度形变,出现颈缩现象,Ti/Al界面呈现波浪状,TiAl_(3)层破碎成岛状,空隙大部分被Al层填充而未形成裂纹。Ti/Al micro-laminated composite sheet with alternate arrangement of Ti/TiAl_(3)/Al laminate microstructure was fabricated through vacuum hot-pressing method.The uniaxial tensile deformation behavior at high temperature and the bulging formability were investigated by uniaxial tensile experiment and gas bulging experiment,respectively.The results show that the composite sheet hot pressed for 15 min exhibits better plastic deformation behavior because the hard and brittle TiAl_(3) layer is thin.When the composite is deformed at elevated temperatures,the cracks of the composite sheet are blunted,which inhibits the propagation of cracks in TiAl_(3) layer,so the elongation and limiting bulging rate at 600℃reach 135%and 45%,respectively.At the top region of the bulged spherical shell,the Ti layer and Al layer both undergo severe deformation and are necked,the Ti/Al interface is wavy,the TiAl_(3) layer breaks into islands,with Al layer filling their gaps,and no cracks are formed.

关 键 词：Ti/Al微叠层复合板 TiAl_(3) 界面 气压胀形 

分 类 号：TB331[一般工业技术—材料科学与工程]