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Synthesis of Iron-Based Laves Phase Containing Praseodymium Magnetostrictive Materials Meng Xiangxi1,Liu Heyan1,Gao Jianbo2,Li Yangxian1,Li Songtao3,Qu Jingping1,Dong Bin1 (1.School of Material... step scanning for the PrxTb1-xFe2B0.2 and PrxTb1-x(Fe0.6Co0.4)2 alloys showed that PrFe2 possessed a large spontaneous magnetostriction λ111. Key words:Laves phase; magnetostriction; synthesis; rare......
电弧熔炼态Laves相Cr2Nb/Cr合金的微观组织演变李克伟1,李双明1,傅恒志1(1.陕西省西安市西北工业大学凝固技术国家重点实验室)摘 要:采用真空非自耗电弧熔炼法制备了Cr-12%Nb(原子分数,下同)和Cr-20%Nb 2种成分合金的纽扣锭,利用XRD,OM,SEM和EDS对电弧熔炼态纽扣锭不同位置的组...共晶组织和Laves相Cr2Nb枝晶界面生长温度,借助最高界面生长温度判据,很好地解释了Cr-20%Nb合金凝固组织的演变及其形成原因. 关键词:真空非自耗电弧熔炼; Laves相Cr2Nb; 离异共晶; 共晶领先相......
the edge to the centre in the ingot of Alloy 1 (0.002% P) and Alloy 6 (0.025% P). At the edge of the ingots, there is only eutectic Laves phase in both alloys (Figs. 3(a) and (b)). At the 1/2 radius... in Laves phase is increased with the increase of P content in the alloys, which is 0.059% in Alloy 1 and 0.929% in Alloy 6. Furthermore, it seems that P does not noticeably influence the compositions of γ......
, China) Abstract: First-principles calculations were performed to investigate the elastic constants, elastic moduli, stacking fault energies, and dislocation dissociations of C15 ZrCr2 Laves phase, based..., et al. Physical metallurgy and mechanical properties of transition-metal Laves phase alloys[J]. Intermetallics, 2000, 9: 1119-1129. [2]Thoma D J, Chu F, Peralta P, et al. Elastic and mechanical......
of C15 Laves phase in Nb-Hf-Cr and Nb-Ta-Cr alloy systems[J]. J Alloys Compd, 2006, 424(1/2): 283–288. [5] CHAN K S. Alloying effects on fracture mechanisms in Nb-based intermetallic in-situ... at 950?1 200 ℃ in air. The results show that Cr phase improves the oxidation resistance of Laves phase NbCr2 based compounds at 950 ℃. However, Nb phase deteriorated the oxidation resistance, moreover......
541004, China) Abstract:Tb0.22Dy0.48Ho0.35Fe2 quaternary alloys are prepared by melting-top casting-annealing process. X-ray diffraction reveals that the alloy is single phase polycrystalline alloy with MgCu2 type cubic Laves phase structure, and (511) preferred orientation occurs in its. The magnetostriction measurements are carried out at room temperature using standard strain gauge technique......
investigated by scanning electron microscopy (SEM) and X ray diffractometry. The results show that the microstructures of as-cast alloys and annealed alloys are α-Fe (Mo,Cr,Ni) + Laves phase (Fe2Mo type... mechanism of Si is that Si can increase the content of Cr in the matrix and promote the formation of dense Cr2O3 film, while the accumulation of Mo and Si in Laves phase increases the stability......
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enhance the formation of Laves phase compounds with high Pr content[3, 4]. So much effort has been done on the Pr-Fe and Ce-Fe compounds[5-10]. The investigations on Ce-based intermetallics show... of Pr0.1-CexTb0.9-xFe1.9 alloys are shown in Fig.1. All the homogenized samples exhibit a perfect cubic Laves phase with MgCu2-type structure. Fig.1 XRD patterns of Pr0.1CexTb0.9-xFe1.9 alloys  ......
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