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冷却速度对Al-8.5Fe-1.3V-1.7Si合金主要相组成的影响 被引量:8

Effect of cooling rate on primary phase constitutes of Al-8.5Fe-1.3V-1.7Si alloy
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摘要 为了解冷却速度对Al-Fe-V-Si合金耐热相的形成规律,采用光学显微镜、X射线衍射仪、透射电镜检测了几种冷却速度条件下的Al-8.5Fe、Al-8.5Fe-1.7Si、Al-8.5Fe-1.3V-1.7Si(质量分数,%)合金的微观组织结构。结果表明:V、Si元素能影响平衡相Al13Fe4的形貌,冷却速度对Al13Fe4的存在起着决定性作用,要消除Al13Fe4相就必须采用大的冷却速度(>103K/s)。在Al-8.5Fe-1.7Si-1.3V合金中全部得到-αAl和Al12(Fe,V)3Si相,冷却速度应大于104K/s。 In order to research the behavior of phases formation in Al-Fe-V-Si system alloy, the microstructures of Al-8.5Fe, Al-8.5Fe-1.7Si, Al-8.5Fe-1.3V-1.7Si (mass fraction, %) were examined by optical microscopy, X-ray diffractrometry and transmitting electron microscopy. The results show that, adding V, Si can affect the appearance of equilibrium Al13 Fe4 phase. When cooling rate is higher than 10^3 K/s, there is no Al13 Fe4 phase in Al-Fe-V-Si system alloy. If there are only α-Al and Al12 (Fe, V)3Si, the cooling rate must be higher than 10^4 K/s.
出处 《中国有色金属学报》 EI CAS CSCD 北大核心 2005年第8期1226-1230,共5页 The Chinese Journal of Nonferrous Metals
基金 国家重点基础研究发展规划资助项目(G1999064900)
关键词 耐热铝合金 微观组织 冷却速度 heat-resistant aluminum alloy microstructure cooling rate
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