大连理工大学主页平台管理系统付雪松 Effects of liquid phases on densification of TiO2-doped Al2O3-ZrO2 composite ceramics 中文主页

论文成果

Characterization of interfacial mechanical properties of diffusion bonding of TiAl alloy and TC11 titanium alloy based on nanoindentation: 点击次数：; 发布时间： 2019-03-11; 发布时间：2019-03-11; 论文类型：期刊论文; 发表时间：2017-04-01; 发表刊物：C e Ca; 收录刊物：EI; 卷号：42; 期号：4; 页面范围：1338-1341; ISSN号：00456152; 摘要：The dual-alloy joint made from diffusion bonding of -TiAl alloy and TC11 titanium alloy is used to replace the traditional titanium alloy of single organization, and the joint can meet the operational performance requirements of aeroplane engines under high stress and thermal gradients. In addition to the base alloys, the overall properties of the dual-alloy joint are subject to the interface. Therefore, it's pretty meaningful to study the interfacial mechanical properties of the dual-alloy joint. Since the length of the interface is at micron scale, nanoindentation tests are carried out in this study. With the Oliver-Pharr method as the theoretical basis and -TiAl alloy and TC11 titanium alloy as base alloys, we use Berkovich indenter to measure the nano-hardness and elastic modulus of the interfacial region, obtaining the change laws of interfacial mechanical properties: (1) nano-hardness and elastic modulus of the interface are 6.56 GPa and 158.33 GPa, respectively; (2) the hardness of the interface ( 2-Ti3Al) is higher than that of -TiAl alloy and TC11 titanium alloy in a descending order; (3) the elastic modulus of the interface ( 2-Ti3Al) is between that of -TiAl alloy and TC11 titanium alloy, and it decreases from -TiAl alloy to TC11 titanium alloy. Itindicates the nanoindentation method is effective in characterizing the interfacial mechanical properties of diffusion bonding at micro-nano scale. ? 2017 Techna Group Srl & ESMC Co., Ltd.

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付雪松

同专业博导同专业硕导个人学术主页

副教授博士生导师硕士生导师

性别：男

毕业院校：大连理工大学

学位：博士

所在单位：材料科学与工程学院

学科：材料加工工程

办公地点：大连理工大学铸造中工程心

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