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通过扫描电镜和透射电镜分析研究了原位反应生成的TiC颗粒对喷射成形态及挤压态的Al-8.5Fe-1.4V-1.7Si合金显微组织的影响,并对合金的力学性能进行了测试。结果表明,原位反应生成的TiC颗粒均匀地分布在合金基体中并细化了基体合金的晶粒,提高了合金的高温组织稳定性;喷射成形Al-8.5Fe-1.4V-1.7Si+3.0TiC合金挤压态的室温和高温强度明显高于喷射成形Al-8.5Fe-1.4V-1.7Si合金挤压态的强度,而且塑性也有明显的提高。
The effects of in-situ reaction of TiC particles on the microstructure of sprayed Al-8.5Fe-1.4V-1.7Si alloy and the as-extruded Al-8.5Fe-1.4V-1.7Si alloy were investigated by scanning electron microscopy and transmission electron microscopy. The mechanical properties of the alloy were investigated test. The results show that the TiC particles formed by in-situ reaction are uniformly distributed in the alloy matrix and the grain size of the matrix alloy is refined and the high-temperature microstructure of the alloy is improved. The spray-formed Al-8.5Fe-1.4V-1.7Si + 3.0 TiC alloy extruded state temperature and high temperature strength was significantly higher than the spray forming Al-8.5Fe-1.4V-1.7Si alloy extruded state strength, and the plastic has also been significantly improved.