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

Wang Wenyan; Shi Shiqin; Shang Zhengping; Shao Chang; Huang Wenjun; Xu Kaihui; Xie Jingpei; Huang Yabo; Liu Jiyao

doi:10.15980/j.tzzz.2016.10.022

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Interfacial Microstructure and Properties of Ti-Al Rolling-casted Composite Plate
Vol. 36, Issue 10, Pages: 1084-1088(2016)
Published： 2016 ，
DOI： 10.15980/j.tzzz.2016.10.022

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[1]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.铸轧法制备钛铝复合板的界面组织与性能[J].特种铸造及有色合金,2016,36(10):1084-1088.

Wang Wenyan, Shi Shiqin, Shang Zhengping, et al. Interfacial Microstructure and Properties of Ti-Al Rolling-casted Composite Plate. [J]. Special Casting & Nonferrous Alloys 36(10):1084-1088(2016)
[1]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.铸轧法制备钛铝复合板的界面组织与性能[J].特种铸造及有色合金,2016,36(10):1084-1088. DOI： 10.15980/j.tzzz.2016.10.022.

Wang Wenyan, Shi Shiqin, Shang Zhengping, et al. Interfacial Microstructure and Properties of Ti-Al Rolling-casted Composite Plate. [J]. Special Casting & Nonferrous Alloys 36(10):1084-1088(2016) DOI： 10.15980/j.tzzz.2016.10.022.

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。

Abstract

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 TiAl

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

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.