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and with the Al-4B addition and the Al-5Ti-1B master alloy in pure Al were comparatively investigated. The results show that the Ti existing in ELTA without Al-4B addition exhibits a certain grain refining efficiency when the melt superheating temperature is lower, but the efficiency decreases rapidly when the superheating temperature is higher. The grain refining efficiency of the Al-5Ti-1B master alloy......
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Effects of various Mg-Sr master alloys on microstructural refinement of ZK60 magnesium alloy CHENG Ren-ju(程仁菊)1, PAN Fu-sheng(潘复生)1, 2, YANG Ming-bo(杨明波)3, TANG Ai-tao(汤爱涛)1 1... Mg-Sr master alloys in ZK60 alloy is different. The rolled Mg-Sr master alloy is found to have relatively higher refinement efficiency than the conventional as-cast, solutionized and rapidly-solidified......
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Effects of Al-10Sr master alloys on grain refinement of AZ31 magnesium alloy YANG Ming-bo(杨明波)1, 2, PAN Fu-sheng(潘复生)2, CHENG Ren-ju(程仁菊)2, TANG Ai-tao(汤爱涛)2 1. College of Materials Science...; Abstract: The effects of Al-10Sr master alloys on grain refinement of AZ31 magnesium alloy were investigated, and the refinement efficiency of different Al-10Sr master alloys (commercial, solubilized......
and refinement of Al-5Ti-B master alloy[J]. Foundry, 2016, 65(1): 1-5. [4] 王顺成, 郑开宏, 戚文军, 石 路, 宁长维. 电磁搅拌对Al-5Ti-1B的显微组织与晶粒细化能力的影响[J]. 有色金属科学与工程, 2014, 5(1): 58-62. WANG Shun-cheng, ZHENG Kai-hong, QI Wen-jun...] HAN Yan-feng,LI Ke,WANG Jun,SHU Da, SUN Bao-de. Influence of high-intensity ultrasound on grain refining performance of Al-5Ti-1B master alloy on aluminum[J]. Materials Science and Engineering......
较高的稀土La元素在铝熔体中的固溶度较低,处于游离态的La元素会与Al3Ti发生如下反应[1]: 图1 不同反应时间t1下Al-5Ti-1B和Al-5Ti-1B-1La中间合金的XRD谱 Fig. 1 XRD patterns of Al-5Ti-1B and Al-5Ti-1B-1La master alloy with different holding...Al-5Ti-1B合金的,如图2所示,这表明稀土La元素添加对Al3Ti中间相起到变质细化作用. 图2 Al-5Ti-1B和Al-5Ti-1B-1La中间合金的微观组织(t1=20 min) Fig. 2 Micromorphologies of Al-5Ti-1B(a) and Al-5Ti-1B- 1La(b) master alloy (t1=20 min) 表1  ......