材料科学
极限抗拉强度
铝
物流
锥面
合金
复合材料
再制造
断裂(地质)
冶金
机械工程
生态学
工程类
生物
作者
Xiangchen Meng,Yuming Xie,Xinyan Ma,Mingyang Liang,Xiaoyang Peng,Song Han,Lei Kan,Xin Wang,Sihao Chen,Yongxian Huang
标识
DOI:10.1007/s40195-022-01444-0
摘要
Volumetric defects in high-strength aluminum alloy components were repaired via friction stir remanufacturing (FSR). Various consumable pins made of AA7075-T6 were designed. Top diameters of the consumable pins affected material flow, which ensured that the materials at the repairing interface were forged to metallurgical bonding. Conical angles determined load transfer besides material flow, which affected the fracture of the pins before the dwelling stage. Sound repaired components were achieved when the conical angle of the consumable pin was 1° larger than that of the volumetric defect. The ultimate tensile strength and elongation of the repaired components reached 445.9 MPa and 9.6%, respectively. The design criteria of the consumable pin in the FSR was established, which provided valuable references to repair volumetric defects in high-strength aluminum components.
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