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in the master alloy at different cooling rates. References [1] VOORHEES P W. Alloy: Scandium overtakes zirconium [J]. Nature Materials, 2006, 5: 435-436. [2] YELAGIN V I, ZAKHAROV V V, PAVLENKO S G...Trans. Nonferrous Met. Soc. China 24(2014) 2420-2426 Effect of cooling rate on morphology of primary particles in Al-Sc-Zr master alloy Cong XU1, Rou DU1, Xue-jiao WANG1, Shuji HANADA 2, Hiroshi......
October 2011 Abstract: V-Ti-Fe master alloys were prepared by metallothermic reduction method, and the influences of the mass ratio of V2O5 to TiO2, Al and Al-Mg alloy addition amounts on the metal recovery...-Ti-Fe master alloy after refinement Figure 9 and Table 6 show the microstructure and chemical compositions of the refined alloy, respectively. Compared with Fig. 7, the Al-O phase cannot be detected......
;Mg-TiB2中间合金;Ca;晶粒细化 中图分类号:TG 146 文献标志码:A Effect of Mg-TiB2 master alloy and Ca on microstructure and properties of AZ91D magnesium alloy HAN Hui, CHEN Yang, LIU Sheng-fa, CHEN... produces significant improvement of mechanical properties and corrosion resistance. Key words: AZ91D magnesium alloy; Mg-TiB2 master alloy; Ca; grain refinement 镁合金具有密度低,比强度和比刚度高,减震性和切削加工性能良好等优点,因此......
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 ideal high-strength and wear-resisting piston material can be obtained. Key words: hypereutectic high-silicon aluminum alloy; Al-Mn-Ti-P-Cu master alloy; Mg; modification; wear mechanism 在铸造材料中,铝合...(Al)相以及颗粒状的AlP相,骨骼状的Al2Cu相积聚分布于α(Al)相边界附近. 表2 Al-Mn-Ti-P-Cu中间合金的化学成分 Table 2 Chemical composition of Al-Mn-Ti-P-Cu master alloy (mass fraction, %) 2.2 Al-Mn-Ti-P-Cu中间合金及Mg对Al-25Si合金组......
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......
Cu-P中间合金的快速凝固处理对Al-Si合金耐磨性的影响 杨立军1,刘双进2,孙继兵2,董天顺2,崔春翔2 (1.天津大学,天津,300072;2.河北工业大学,天津,300130) 摘要:研究了Cu-P中间合金的快速凝固处理对Al-Si合金耐磨性的影响.TEM分析表明:在冷却速度为105~106℃/s时,Cu-P中间合金薄带的组织由纳米晶和少量的非晶组织组成,而且Cu-P中间合金中的Cu3P的晶粒尺寸由5~40 μm下降到30~50 nm.结果表明,由于强度和硬度的提高,用薄带状中间合金改性处理的Al-Si合金的耐磨性要高于用块状中间合金改性处理的Al-Si合金:磨损率由0.86%下降到0.39%.因此,用熔体快淬Cu-P中间合金进行改性处理是提高Al-Si合金的耐磨性的有效办法. 关键词:熔体快淬; 快速凝固; 耐磨性; 改性; melt-spin; rapid......
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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