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土降低了合金的共晶点温度和初晶a(Al)的形核温度,并减小组织熔化过程中共晶反应的放热量. 关键词:A356铝合金;稀土; 混合稀土;晶粒细化;变质处理; 微观组织 中图分类号:TG146.2 文献标志码:A Effect of mass fraction of mischmetal addition on microstructures...; mischmetal; grain refining; modification; microstructure 为了改善铸态亚共晶Al-Si合金的组织结构,已经研究开发了多种晶粒细化剂,如Al-Ti-B系[1-5],Al-Ti-C系[6-7] 中间合金等.随着高温保温时间的延长,AlTiB中间合金对高Si铝合金的细化效果存在明显的 "衰退"现象.Al-Si合金中添加适量稀土(RE),不仅具有细化和变质的......
id="ChDivSummary" name="ChDivSummary"><正>The nonstoichiometric La-rich mischmetal (designated by Ml)-based hydrogen storage alloy with a composition of Ml(Ni0.64Co0.20Mn0.12Al0.04)4.76......
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Effect of Adding Extruded Mg-Mischmetal Intermediate Alloy on Microstructure and Properties of Die-Casting Magnesium Alloy AZ91D张奎,徐玉磊,李兴刚,张凯,崔代金,雷健摘 要:The preparation techniques of Mg-mischmetal intermediate alloy and the effects of the mischmetal addition ranging from 0.45% to 1.04% on the microstructure and properties of AZ91D alloy prepared by die......
electrochemical properties of AB5-type storage alloys, the new type composite alloys M1Ni3.5Co0.6Mn0.4Al0.5–x wt% Mm0.89-Mg0.11-Ni2.97Mn0.14Al0.20Co0.54(x = 0, 5, 10; M1 means mischmetal) were prepared......
a new prospect for the utilization of LaCe mischmetal in 2:14:1-type permanent magnets.关键词:......
Hydrogen Absorption Thermodynamic Properties of Rare Earth Based Hydrogen Storage Alloy in Benzene 陈立新1,蔡官明1,徐国华1,王启东1,安越1,陈长聘1 (1.Institute of Metallic Materials, Zhejiang University, Hangzhou 310027, China) Abstract:The hydriding/dehydriding thermodynamic properties of the slurry system formed by suspending La-rich mischmetal nickel hydrogen storage alloy (MlNi5) in Benzene (C6H6) were......
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Trans. Nonferrous Met. Soc. China 24(2014) 401-405 In situ formation of RE2S3 and RE2O2S phases on sinter skin of Cr–mischmetal co-doped WC-Co alloy Li Zhang1, Yu-ping FENG1, Shu Chen2, Hou-ping Wu1... dispersive X-ray spectroscope and X-ray diffractometer. RE represents La-, Ce-, Pr- and Nd-containing mischmetal, and β is cobalt-based binder phase. It was discovered that La, Ce, Pr and Nd migrated......
=mischmetal with La/Ce ratio of 0.65) alloy were analyzed.It was shown that the microstructures on the skin and in the inner part of the alloy were all characterized with a WC+β+M structure,where β......