Influence of rare earth oxides (La2O3 or CeO2) on the microstructure and properties of Ni/Al composites fabricated by friction stir processing

被引：0

作者：

Liu Y. ^{[1
]}

Huang C. ^{[1
]}

Xia C. ^{[1
]}

Huang S. ^{[1
]}

Liu F. ^{[1
]}

Ke L. ^{[1
]}

机构：

[1] National Defence Key Discipline Laboratory of Light Alloy Processing Science and Techonology, Nanchang Hangkong University, Nanchang

来源：

Huang, Chunping (hcp98106@163.com) | 2018年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 35期

关键词：

CeO[!sub]2[!/sub; Friction stir processing; La[!sub]2[!/sub]O[!sub]3[!/sub; Microstructure; Ni/Al composites; Property;

D O I：

10.13801/j.cnki.fhclxb.20171228.003

中图分类号：

学科分类号：

摘要：

The Ni/Al composites were fabricated by friction stir processing (FSP) by adding different kinds of rare earth oxides (La2O3 or CeO2). The effects of rare earth oxides on the microstructure and properties of Ni/Al composites were studied by SEM, EDS, XRD, electron probe microanalysis (EPMA) and tensile test at room temperature. The results show that Ni/Al composite has more obvious agglomerates of Ni in composite zone. The distribution of Ni power content and size increase in Ni-La2O3/Al and Ni-CeO2/Al composites. La2O3 or CeO2 can reinforce Al-Ni in-situ reaction to produce more reinforced phase. Ni-CeO2/Al composite has better uniform organization and the volume fraction of Al3Ni enhances in composite zone. The tensile strength of Ni/Al composite is significantly increased when adding La2O3 or CeO2. The tensile strength of Ni-La2O3/Al and Ni-CeO2/Al composites can reach 221 MPa and 238 MPa, respectively. Compared with the Ni/Al composites (166 MPa), the tensile strength has increased by 33.1% and 43.4%, respectively. © 2018, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.

引用

页码：2489 / 2494

页数：5

共 21 条

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