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在不同轧制压下率下对5052-H112铝合金进行冷轧,然后进行了搅拌摩擦加工。利用OM和静力拉伸试验研究了轧制压下率对5052-H112铝合金搅拌摩擦试样显微组织和力学性能的影响。结果表明:随冷轧压下率增加,合金的屈服强度增大而伸长率减小,屈服强度最大值达到原材料屈服强度的2.44倍;经冷轧和搅拌摩擦加工的试样,屈服强度均降至111 MPa左右,伸长率均增大至37%左右,搅拌摩擦试样的屈服强度和伸长率均不受冷轧压下率的影响。
The 5052-H112 aluminum alloy was cold rolled at different rolling reduction rates and then subjected to friction stir processing. The effect of rolling reduction on the microstructure and mechanical properties of 5052-H112 aluminum alloy friction stir specimen was studied by OM and static tensile test. The results show that as the reduction of cold rolling rate increases, the yield strength of the alloy increases while the elongation decreases, and the maximum yield strength reaches 2.44 times of the yield strength of the raw material. The samples subjected to cold rolling and friction stir processing have both yield strengths Down to 111 MPa, the elongation increases to about 37%. The yield strength and elongation of the friction stir specimen are not affected by the rolling reduction.