摘要:利用光学显微镜、扫描电镜、能谱仪、万能材料试验机等设备,研究了Al-5Ti-0.2C细化剂质量分数和细化保温时间对5356铝合金显微组织和力学性能的影响。结果表明:Al-5Ti-0.2C细化剂能够明显地细化5356铝合金晶粒;随着细化剂质量分数的增加和细化保温时间的延长,铝合金晶粒尺寸先减小后增大;添加细化剂后,铝合金的力学性能得到提高,当细化剂质量分数为0.3%和细化保温20min时,铝合金的伸长率最大,为12.58%,其综合力学性能最好。
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