Preparation of Al2Cu/Al composites by mechanical alloying and spark plasma sintering

被引：0

作者：

Pu, Shaoling ^{[1
]}

Qiao, Zhijia ^{[1
]}

Mou, Yang ^{[1
]}

Xue, Lihong ^{[1
]}

Yan, Youwei ^{[1
]}

Wu, Shusen ^{[1
]}

机构：

[1] State Key Laboratory of Material Processing and Die and Mold Technology, Huazhong University of Science and Technology, Wuhan,430074, China

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2014年 / 31卷 / 05期

关键词：

Atoms - Copper alloys - Fracture toughness - Powders - Strain - Binary alloys - Mechanical alloying - Solid solutions - Aluminum alloys - Fracture - Phase structure;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The bulk dense Al2Cu/Al composites were prepared in situ by mechanical alloying (MA) and spark plasma sintering (SPS), using Al and Cu powders as raw materials. The variation of morphology, size and phase structure of powders during the MA process was studied. The microstructure and the mechanical properties of composites after SPS process were investigated. The results show that with the increase of MA time in MA process, some amount of Cu atoms gradually diffuse into Al atomic lattice to form a homogeneous supersaturated Al (Cu) solid solution. During SPS process, Cu atoms precipitate from supersaturated solid solution and then react with Al to form Al2Cu particles uniformly distributed in Al matrix and Al2Cu/Al composites are formed. The density of Al2Cu/Al composites reaches up 98.7%. It exhibits good mechanical properties with high fracture strength (611.3 MPa) and large plastic strain (9.6%) at room temperature.

引用

页码：1244 / 1249