Mechanical and Microstructural Characterization of Hybrid Aluminum Nanocomposites Synthesized from an Al-Fe3O4System by Friction Stir Processing

被引:17
作者
AzimiRoeen, Ghasem [1 ]
Kashani-Bozorg, Seyed Farshid [2 ]
Nosko, Martin [3 ]
Lotfian, Saeid [4 ]
机构
[1] Isfahan Univ Technol, Ctr Educ Workshops, POB 8415683111, Esfahan, Iran
[2] Univ Tehran, Coll Engn, Ctr Excellence Surface Engn & Corros Protect Ind, Sch Met & Mat Engn, POB 11155-4563, Tehran, Iran
[3] Slovak Acad Sci, Inst Mat & Machine Mech, Dubravska Cesta 9, Bratislava 8451311, Slovakia
[4] Univ Strathclyde, Fac Engn, Glasgow G1 1XQ, Lanark, Scotland
基金
英国工程与自然科学研究理事会; 美国国家科学基金会;
关键词
Reactive friction stir processing; Nano-composites; Fe3O4; Thermite; IN-SITU; REACTIVE MECHANISM; CARBON NANOTUBES; COMPOSITES; FABRICATION; NANOPARTICLES; PROPERTY; BEHAVIOR; SYSTEM; AL3TI;
D O I
10.1007/s12540-019-00393-1
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Reactive friction stir processing was used to fabricate in situ hybrid nano-composite. Nano-sized Al(2)O(3)and Al(13)Fe(4)products were formed in the stir zone of rolled AA1050 through the addition of pre-milled Al + Fe(3)O(4)powder mixture. The thermomechanical phenomena associated with the process and addition of active powder mixture provided the occurrence of the aluminothermy reaction. Microstructural investigations showed significant matrix grain refinement; the mean grain size of ~ 3 mu m was achieved. The nano-sized reinforcement products prevented grain growth after dynamic recrystallization process by pinning the grain boundaries. The excellent matrix grain refining and formation of in situ hard reinforcements led to the increase of hardness and tensile strength to ~ 56% and 49% over those of the untreated substrate, respectively. Graphic
引用
收藏
页码:1441 / 1453
页数:13
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