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Mg-Zn-Ca系富Mg区域三元化合物及其固态相平衡李洪晓1,马倩倩2,任玉平3,蒋敏2,秦高梧3(1.辽宁省沈阳市东北大学材料各向异性与织构工程教育部重点实验室2.东北大学 材料各向异性与织构教育部重点实验室3.东北大学 材料各向异性与织构教育部重点实验室,沈阳110004)摘 要:利用SEM,EPMA,XRD和TEM对Mg-Zn-Ca系富Mg区域三元化合物的成分,结构及其相平衡进行了研究.结果表明,Mg-Zn-Ca系富Mg区域存在2个可与镁基固溶体相平衡的三元化合物T1和T2.其中化合物T1为线性化合物,成......
was fabricated successfully by using electron beam-physical vapor deposition(EB-PVD) method. The microscopic morphology and phase composition of specimens in various states were analyzed by atomic... and τ phase disappear, α2 phase decreases obviously, and the composition tends to uniformization. Key words: TiAl-based alloy; electron beam-physical vapor deposition; sheet; morphology; phase analysis......
a new experimental fact for the controversial topic on structure of striated layer. Chemical composition of interfacial phase varied slightly with heat treatments, but always between that of α and β...Interfacial Phase in Ti-5Al-2Mo-3Zr Alloy邓永瑞,邱东耀,秦泽华摘 要:<正> Under appropriate cooling condition, intcrfacial phase appeared between α and β phases......
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that will melt during heating) Fig.10 Evolution composition profile (a,b,c) of side arms shown in inset of Fig.9 during heating stage; evolution of phase field (d,e,f) of side arms as shown in inset... Trans. Nonferrous Met. Soc. China 20(2010) s774-s780 Experimental studies and phase field modeling of microstructure evolution during solidification with electromagnetic stirring P......
phase diagrams. Relative phase stability between the CIIb MoSi2 and the C40 TSi2 is investigated and lamellar MoSi2/TSi2 two-phase microstructures are obtained by appropriate choice of composition...Microstructures and Mechanical Property of MoSi2/TSi2(T=Cr,V,Nb,Ta,Ti)Two-Phase Alloys Yoshisato Kimura1,Yoshinao Mishima1,Fu-Gao Wei1 (1.Department of Materials Science and Engineering......
配碳量对承钢钒钛烧结矿矿物组成及显微结构的影响王文山1,任刚2,孙艳芹2,吕庆2(1.辽宁省沈阳市东北大学材料与冶金学院2.河北理工大学 冶金与能源学院,河北唐山 063009)摘 要:承德钢铁公司是河北省唯一使用钒钛磁铁矿作为主要炼铁原料的钢铁企业,但目前承钢钒钛烧结矿的强度和冶金性能不好,严重制约了高炉的顺行和炼铁系统成本的降低.采用光学显微镜研究了配碳量对承钢钒钛烧结矿显微结构的影响,对提高其烧结矿质量提供了理论依据.结果表明,随着w(C)由4.0%提高到5.5%,赤铁矿体积分数减少20%左右,磁铁矿增加......
Effects of magnesium content on phase constituents of Al-Mg-Si-Cu alloys LIU Hong(刘 宏)1, ZHAO Gang(赵 刚)2, LIU Chun-ming(刘春明)2, ZUO Liang(左 良)2 1. School of Mechanical Engineering, Shandong... dispersive spectrum(EDS), X-ray diffractometry(XRD) and metallographic analysis, the effects of variation of magnesium content on phase constituents of Al-Mg-Si-Cu alloys were investigated. The results......
; Abstract: Laves phase NbCr2 alloys with a composition of Nb-66.7Cr (molar fraction, %) were prepared by mechanical alloying and hot pressing. The microstructures and properties of the Laves phase NbCr2... composition segregation and simultaneously refine grain size to the micro and/or nano level[7]. All of these build a basis of producing ultra-fine grained Laves phase NbCr2 alloys by subsequent hot......
, the understanding of relationships between materials composition and properties can be improved in essence. However, research on electron structures of γ/a2 phase boundaries in γ-TiAl is little... element contents of γ phase and a2 phase Table 1 shows alloying element M composition and lattice parameter of γ or a2 phases in Ti-47Al-2M (M=Nb, Cr, V) alloys, which were analyzed using EDAX and XRD......
