搅拌摩擦工艺参数对汽车用铝基储能合金性能的影响

Influence of FSP process parameters on the properties of aluminum-matrix storage alloy for vehicles

为了深入探讨搅拌摩擦加工(FSP)工艺参数对改性铝基储能合金显微组织、热稳定性和氧化性能的影响,试验采用5种不同的FSP工艺参数,制备了改性铝基储能合金,并进行了显微组织、热稳定性和氧化性能的分析。结果表明,随旋转速度从400 r/min增大至1 200 r/min或行进速度从30 mm/min增大至150 mm/min,搅拌摩擦改性铝基储能合金的平均晶粒尺寸先减小后增大,热稳定性和氧化性能先提高后下降。优化工艺参数为:旋转速度800 r/min,行进速度90 mm/min。

In order to explore the effects of FSP process parameters on the microstructure, thermal stability and oxidation resistance of modified aluminum alloy, five tests with different FSP process parameters were used to prepare the modified aluminum-matrix storage alloy, and then the mierostructure, thermal stability and oxidation resistance properties were ana- lyzed. The results show that with the increase of rotational speed from 400 r/min to 1200 r/ min or the increase of feed speed from 30 mm/min to 150 mm/min, the average grain size of FSP modified aluminum matrix storage alloys first decreases and then increases, thermal sta- bility and oxidation resistance properties first increase and then decrease. The optimized rota- tion speed and feed speed are 800 r/min and 90 mm/min, respectively.