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, Zhengzhou 450052, China) Abstract:Through investigating the grain refinement effect of Al-B master alloy on pure Al, Al-0.5%Si, Al-1%Si, Al-1.5%Mg and Al-4%Cu alloys, the grain refinement mechanism... Fig.7 Macrostructures of Al-1.5%Mg alloys refined by Al-B master alloy with different B contents: (a) 0%; (b) 0.01%; (c) 0.02%; (d) 0.04% 图8 Al-B中间合金细化Al-4%Cu合金的宏观组织 Fig.8 ......
Trans. Nonferrous Met. Soc. China 23(2013) 294-300 Production of Al-B master alloys by mixing KBF4 salt into molten aluminum Qing-liang WANG1, Hong-sheng ZHAO2, Zheng-guang LI2, Li SHEN2, Jiu-zhou... involving the direct addition of KBF4 salt to molten aluminum has several drawbacks. The experimental results demonstrate that the Al-B master alloys produced by the immersion method show a microstructure......
in the hypoeutectic Al-Si alloy prepared by using ELTA was investigated, and compared with those of Al-5Ti, Al-5Ti-1B and Al-4B master alloys in the similar alloy prepared by using pure Al. The results indicate... and its alloys [2]. Grain refining of pure Al and wrought Al alloys is usually achieved by adding Al-Ti or Al-Ti-B master alloy to the melts of the metals before casting [2]. However, grain refining of Al......
基于Master CAM的数控代码转换系统开发及应用何培英,樊宁,师展郑州轻工业学院机电工程学院摘 要:MasterCAM内部虽然带有许多后置处理程序,但并不能直接应用于一些在我国使用比较普遍的数控系统.针对这一状况,在分析了Master CAM后置处理程序特点的基础上,构思系统的开发流程,利用VB 6.0程序开发环境进行相应的界面设计和程序开发,开发出了一个小型软件系统,可使Master CAM生成的后置处理程序直接转换为多种数控系统所需的NC代码,从而满足不同数控系统的需求.并以实际应用验证系统运行的实用性和可靠性,以及操作的简便性.关键词:Master CAM;数控代码;后置程序;转换系统;......
that the prepared master alloy consisted of α-Al, TiAl3, TiC and Al3Y phases, and exhibited good grain-refining performance of AZ31 alloy. Morphology of α-Mg changed from coarse dendritic to fine equiaxed and the average grain size of α-Mg matrix reduced from the original 580 to 170 μm after adding 1.0 wt.% master alloy. The grain refining efficiency of Al-Ti-C-Y master alloy on AZ31 alloy was mainly......
细化效果的影响[J]. 稀有金属材料与工程, 2015, 44(6): 1494-1498. WANG Zheng-jun, SI Nai-chao. Effect of the morphology and distribution of the second phases of Al-Ti-B-RE master alloys on refining commercially pure..., CHEN Huan, PAN Chun-xu. Elemental yield control and its effect on grain refinement of Al-Ti-B master alloys[J]. Journal of Materials Science and Engineering, 2018, 36(4): 523-529. [4] 张丽丽, 江鸿翔, 赵九洲, 李 璐......
] and the Al-Ti-C master alloy contains a certain amount of Al. Thus, 1% pure Al (99.99% purity) was also used to refine Mg under the same condition to compare its efficiency with the master alloys... alloy is also potential in refining Mg alloys and this will be verified in our following work. 5 Conclusions 1) A new Al-Ti-C master alloy, which contains Al4C3 and TiC particle clusters, was prepared......
Al-Mg-Sc合金的拉伸性能和显微组织研究谭澄宇,陈准,郑子樵摘 要:研究了 Al- 5 .6 3Mg- 0 .13Sc(wt% )合金经过 2 5 0℃和 30 0℃退火后室温的拉伸性能和显微组织特征 ;分析了 Sc对 合金组织与拉伸性能的影响.结果表明 :退火后拉伸强度先迅降低 ,但随着退火时间延长 ,拉伸性能稳定保持不变.透射电镜观察表明 ,在 Al- Mg- Sc合金中 ,Sc以细小的 Al3Sc粒子的形式在晶内及亚结构上析出 ,它强烈地钉扎或阻碍位错的运动 ,稳定亚结构. Al- Mg合金添加 Sc能使该合金在应变硬化和稳定化处理后具有良好的机械性能关键词:Al-Mg-Sc合金;拉伸性能;显微组织;......
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... alloys (mass fraction) Fig. 4 Influences of Al addition amounts on recovery rates of V and Ti 3.3 Influences of Al-Mg alloy addition amount on metal recovery rates and compositions of prepared......
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