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Al-3B合金的B元素和再生铝合金A356中的Fe反应生成Fe2B沉于炉底. 关键词:Al-3B中间合金；再生铸造铝合金；杂质铁；力学性能 中图分类号:TG146 文献标志码:A Effects of Al-3B master alloy... of Nonferrous Metals, Guangzhou 510650, China; 2. School of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: The effects of Al-3B master alloy additions......
the distribution of TiC in aluminum melt and advances the nucleation of TiC. Key words: Al-TiC master alloy; Al-TiAl3 master alloy; TiC; TiAl3; grain refinement ... Al-TiC中间合金的XRD谱(a)和微观组织(b) Fig.1 XRD pattern (a) and microstructure (b) of Al-TiC master alloy 图2 Al-TiAl3中间合金的XRD谱(a)和微观组织(b) Fig.2 XRD pattern (a) and microstructure (b......
of Technology, Taiyuan 030024, China; 2. Chonche Auto Double Happiness Tyre Co. Ltd., Qingxu 030400, China) Abstract: The hypereutectic Al-25Si alloy was processed by a new type of green master alloy Al-Mn-Ti-P..., strengthening and wear mechanisms were discussed. The results show that this master alloy has significant refining effects on the coarse primary Si, eutectic Si and α(Al), and adding Mg after......
间合金熔化后用热电偶监测铝合金熔体的温度,待铝合金熔体温度升至1260 ℃(合金液相线温度之上)并保温5 min后,用石墨棒对熔体进行充分的搅拌,搅拌后用涂有氮化硼涂料的不锈钢勺子将铝液舀出,浇铸到3种冷却速率的铸造模中. 表1 Al-5Zr中间合金的合金成分 Table 1 Chemical composition of Al-5Zr master alloy (mass...小的气孔,基体中的初生相无法用肉眼辨别. 图3 不同冷却速率铸造模条件下Al-5Zr 中间合金宏观凝固形貌 Fig. 3 Macrostructures of Al-5Zr master alloy in molds with different cooling rates 图4 不同冷却速率铸造模条件下试样的SEM像 Fig. 4 SEM......
Mg-12Mn中间合金的制备工艺研究 邱日盛1,李锐1,高家诚2,范科1 (1.重庆大学,材料科学与工程学院,重庆,400045;2.国家镁合金材料工程技术研究中心,重庆,400044) 摘要:采用电磁搅拌铸造法制备了Mg-12Mn中间合金,通过正交试验法考查了Mn粉粒度,搅拌功率,搅拌时间及冷却方式等参数对Mg-Mn中间合金中Mn含量及其分布的影响,并将Mg-12Mn中间合金通过配料计算制备成MB1合金.通过化学分析,金相观察,XRD等表征手段分析表明:在本试验条件下,Mg-12Mn中间合金较优制备工艺参数为粉体粒度150~68μm,10kW/4min,铜模空冷.MB1合金中Mn的收得率为86.1%. 关键词:Mg-Mn中间合金; 电磁搅拌; 工艺; 成分; 组织; Mg-Mn master alloy; electromagnetic stirring; process......
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of Mg68Zn32 and Mg68Zn28Y4 were prepared from the master alloy Mg-25%Y (mass fraction), high purity Mg (99.9%, mass fraction) and Zn(99.9%, mass fraction) by melting in graphite crucibles in 3 kW electric... Corrosion behavior of as-cast Mg68Zn28Y4 alloy with I-phase SHI Fei(史 菲)1, 2, YU Yuan-chun(于元春)3, GUO Xue-feng(郭学锋)2, ZHANG Zhong-ming(张忠明)2, LI Ying-ying(李瑛颖)1 1. School of Materials......
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by the addition of icosahedral quasicrystal-contained Mg-Zn-Y-Mn master alloy. The introduction of MgZnYMn I-phase into ZA54 alloy has great contribution to the refinement of matrix microstructures and the improvement of mechanical properties. When the addition of Mg-based spherical quasicrystal master alloy is up to 3.5% (mass fraction), the macro-hardness of ZA54-based composites is increased......
AZ31镁合金晶粒的差异[25] Fig.4 Difference of Al-10Sr and Mg-10Sr master alloys in grain refinement of AZ31 magnesium alloy[25]: (a) Different Sr adding amounts; (b) Different melt holding times 图5 Mg-10Sr中间合金状态对AZ31镁合金晶粒细化的影响[26] Fig.5 Effects of state of Al-10Sr master alloy on grain refinement of AZ31 magnesium alloy[26]: (a) Effect of mass fraction of Sr; (b) Effect of melt......
