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, the same thing as that in the second stage happens except that all the α(Al) matrixes are melted. Key words: spray forming; Al-Si alloy; semisolid; coarsening rate 1 Introduction Spray forming... of the hypereutectic Al-Si in the semisolid process is essential for the application of spray forming Al-Si alloy. In the present work, Al-27%Si alloy was prepared by the spray forming process, and the mechanism......
Sound insulation property of Al-Si closed-cell aluminum foam bare board material YU Hai-jun(尉海军)1, YAO Guang-chun(姚广春)1, WANG Xiao-lin(王晓林)2, LI Bing(李 兵)1, YIN Yao(尹 銚)2, LIU Ke(刘 克)2 1. School... September 2006 ___________________________________________________________ Abstract: Al-Si closed-cell aluminum foam bare boards of 1 240 mm×1 100 mm with different densities and thicknesses were......
Received 6 December 2010; accepted 4 May 2011 Abstract: In order to study the self tempering effect on the solidification of Al-Si alloy, a setup was designed to conduct experiments. The characters of β.... Key words: β phase; Al-Si alloy; self tempering effect; Brinell hardness 1 Introduction Al-Si alloy is the most widely used aluminum alloy [1-2] in the manufacturing of the engine parts of cars......
Trans. Nonferrous Met. Soc. China 29(2019) 253-262 Influence of high pressure and manganese addition on Fe-rich phases and mechanical properties of hypereutectic Al-Si alloy with rheo-squeeze casting...; hypereutectic Al-Si alloy; Fe-rich phases; mechanical properties 1 Introduction In automotive industry, hypereutectic Al-Si alloys are extensively used due to their good castability, high specific strength......
交流电场对Al-Si共晶合金凝固组织的影响 张伟强1,黄立国1 (1.辽宁工程技术大学,材料科学与工程系,辽宁,阜,新,123000) 摘要:研究交流电场作用下Al-Si共晶凝固组织的变化.结果表明,电场作用改变了共晶Si的生长形态,随电流密度增加,共晶Si的形态经历一次先细化后粗化的过程.电场的处理作用使Al-Si共晶合金中潜在的形核质点增加,电流密度为16.98mA/mm2时,形核率达到最大值,电场对共晶Si的生长有抑制作用. 关键词:金属材料; Al-Si共晶合金; 交流电场; 凝固组织; [全文内容正在添加中] ......
直流电场对Al-Si共晶合金凝固组织的影响 张伟强1,黄立国1 (1.辽宁工程技术大学材料科学与工程系,辽宁,阜新,123000) 摘要:研究了直流电场作用下Al-Si共晶凝固组织的变化.试验结果表明:电场作用改变了共晶Si的生长形态,随着电流密度的增加,共晶Si的形态经历一次细化的过程.初步分析了电场作用造成上述结果的机理. 关键词:直流电场; 凝固组织; Al-Si共晶合金; [全文内容正在添加中] ......
值小于混合后目标合金在液相线的吉布斯自由能(=-39.336 6 kJ)时,初生硅才能得到明显的细化. 关键词:过共晶Al-Si合金;液-液混合;受控扩散凝固(CDS);初生硅相;热力学 中图分类号:TG249;TG146.2 文献标志码:A Hypereutectic Al-Si alloy prepared by controlled... energy of the resultant liquid at its liquidus temperature (=-39.336 6 kJ), the primary silicon phase will be refined obviously. Key words: hypereutectic Al-Si alloy; liquid-liquid mixing; controlled......
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Al-Si合金熔体中氢含量与Si含量的关系 陈建奇1,边秀房1,王伟民1,孟庆格1 (1.山东大学材料液态结构及其遗传性教育部重点实验室,济南,250061) 摘要:通过研究相同过热度下Al-Si合金熔体中的氢含量,发现氢含量曲线具有和液相线类似的变化规律,即随着Si含量的增加,试样中的氢含量先减少,到共晶点时为最小此后氢含量又逐渐增加.并且过热度越大,氢含量越高合金液态结构X射线衍射结果表明,熔体中原子密度随着Si含量的变化趋势与氢含量曲线相反用熔体"自由体积理论"解释了铝熔体氢含量的变化规律. 关键词:Al-Si合金; 氢含量; Si含量; 过热度; 自由体积; [全文内容正在添加中] ......
Effect of addition of Al-Si eutectic alloy on microstructure and mechanical properties of Mg-12wt%Li alloyZilong Zhao1,Xuegang Xing2,Jinyu Ma1,Liping Bian1,3,Wei Liang1,3,Yide Wang31. College... that mechanical properties of Mg-12 Li alloy were significantly improved by the addition of Al-Si eutectic alloy. Mg-12 Li-7(Al-Si) alloy shows the highest strength of 196 MPa of the investigated alloys, which......