Effect of heat treatment on microstructure and tribological behavior of friction stir processed Al2O3-reinforced AA2024-T351 matrix

被引：6
|
作者：
Haddad, Adel [1 ]
Benamor, Abdessabour [1 ]
Chiker, Nabil [1 ]
Hadji, Youcef [1 ]
Temmar, Mustapha [2 ]
Hakem, Maamar [3 ]
Badji, Riad [3 ]
Abdi, Said [4 ]
Hadji, Mohamed [1 ,3 ]
机构：
[1] Univ Saad Dahleb Blida 1, LERTI, Lab Etud & Rech Technol Ind, Blida, Algeria
[2] Univ Saad Dahleb Blida 1, Lab Struct, Blida, Algeria
[3] Res Ctr Ind Technol CRTI, POB 64, Algiers, Algeria
[4] USTHB, Lab Sci & Genie Mat, Algiers, Algeria
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2021年 / 115卷 / 5-6期
关键词：
Friction stir processing; Metal matrix composites; Wear; Friction; MECHANICAL-PROPERTIES; REINFORCED ALUMINUM; SLIDING WEAR; COMPOSITES; ALLOY; MG; PRECIPITATION; SI;
D O I：
10.1007/s00170-021-07237-6
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In the present work, 2024-T351 Al alloy reinforced with alumina particulates (Al2O3p) was elaborated using friction stir processing (FSP). The effect of solution heat treatment followed by subsequent aging on microstructure, hardness, and tribological behavior is discussed. It was noticed that the hardness of the as-FSPed 2024-T351/Al2O3p was slightly enhanced in comparison to the as-received AA2024-T351 material, whereas the resulting wear resistance was remarkably improved. After heat treatment process, the composite volume increased, and swelling and pores were created at the processed area. The heat treatment caused a degradation in wear resistance compared to as-FSPed composites. The precipitation mechanism changed for AA2024/Al2O3p; reactions occurred at grain boundaries between Al2O3 and Cu or Mg, causing their depletion from the Al matrix. Intriguingly, the precipitation mode in heat-affected zone of the matrix also changed to grain boundary precipitation.
引用
收藏
页码：1671 / 1681
页数：11
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