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Formation of a metastable bcc solid solution and decomposition to a C15 Laves phase in melt-spun CrNb(sub 10)Ti(sub 10)

机译：形成亚稳态bcc固溶体并在熔纺CrNb（sub 10）Ti（sub 10）中分解成C15 Laves相

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A metastable, disordered bcc phase has been formed from the melt in a Cr- rich alloy of the Nb-Cr-Ti system, where large volume fractions of the Laves phase would develop under equilibrium solidification conditions. X-ray diffraction (XRD) studies and lattice constant determinations confirm that the melt-spun ribbons contain a bcc phase beyond its terminal solid solution limits. Solidification pathways are proposed based upon metastable and equilibrium phase diagrams. Microstructures have been studied using optical microscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Cross-sectional TEM reveals tiny, dispersed Laves phase precipitates within the metastable bcc grains near the chill (wheel) side. Away from the wheel, the microstructure changes to a dendritic structure of the bcc and C15 Laves phase. Annealing of the melt-spun ribbons produces a fine, two phase microstructure of the equilibrium phases. Microstructures from the melt- spun and arc melted processing conditions are compared. The micro structural control afforded through this metastable processing route enables a methodology to tailor phase distributions for optimized toughness in Laves phase alloys.

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Chen, K. C.; Kotula, P. G.; Chu, F.; Thoma, D. J.;
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年度 1998
页码 1-28
总页数 28
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Microstructure ; Phase Studies ; Chromium Alloys ; Niobium Alloys ; Titanium Alloys ; Intermetallic Compounds ; X-ray Diffraction ; Lattice Parameters ; Laves Phases ; Experimental Data ; Meetings ; Tables(data);

机译：微观结构;相研究;铬合金;铌合金;钛合金;金属间化合物; X射线衍射;晶格参数; Laves相;实验数据;会议;表（数据）;

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专利

1. Irradiation-Induced Formation of Nanocrystallites with C15 Laves Phase Structure in bcc Iron [J] . M.-C. Marinica, F. Willaime, J.-P. Crocombette Physical review letters . 2012,第2期

机译：bcc铁中辐照诱导形成具有C15 Laves相结构的纳米微晶
2. Effect of Ce substitution on hydrogen absorption/desorption of Laves phase-related BCC solid solution Ti33V37Mn30 alloy [J] . Chen X. Y., Chen R. R., Yu K., Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics . 2019,第期

机译：Ce取代对熔融剂相相关BCC固溶体Ti33V37MN30合金氢吸收/解吸的影响
3. Plastic deformation behavior and microscopic mechanism of metastable Ti-10V-2Fe-3Al alloy single crystal pillars orientated to < 011 >_ β in submicron scales Part Ⅱ: Phase transformation dependence of size effect and deformation mechanism [J] . Pan Yan, Sun Qiaoyan, Xiao Lin, Materials Science and Engineering . 2019,第JANa16期

机译：亚微米级取向为<011> _β的亚稳Ti-10V-2Fe-3Al合金单晶柱的塑性变形行为和微观机理第二部分：尺寸效应的相变依赖性和变形机理
4. FORMATION OF A MET AST ABLE BCC SOLID SOLUTION AND DECOMPOSITION TO A C15 LAVES PHASE IN MELT-SPUN CrNb_(10)Ti_(10) [C] . Symposium on phase transformations and systems driven far from equilibrium . 1998

机译：形成满足AST的BCC固体溶液和熔融CRNB_（10）TI_（10）中的C15 LAVES相的分解
5. Investigation of the stability of C15 Laves phase structures in bcc iron by molecular dynamics method [D] . Wang, Hao 2016

机译：分子动力学方法研究bcc铁中C15 Laves相结构的稳定性
6. FCC to BCC transformation-induced plasticity based on thermodynamic phase stability in novel V10Cr10Fe45CoxNi35−x medium-entropy alloys [O] . Y. H. Jo, W. M. Choi, D. G. Kim, -1

机译：基于热力学相稳定性的新型V10Cr10Fe45CoxNi35-x中熵合金从FCC到BCC相变诱发的塑性
7. Formation of a metastable bcc solid solution and decomposition to a C15 Laves phase in melt-spun CrNb{sub 10}Ti{sub 10} [O] . Chen, K.C., Kotula, P.G., Chu, F., 1998

机译：形成亚稳态bcc固溶体并在熔纺CrNb {sub 10} Ti {sub 10}中分解成C15 Laves相
8. Formation of a metastable bcc solid solution and decomposition to a C15 Laves phase in melt-spun CrNb(sub 10)Ti(sub 10) [R] . Chen, K. C. , Kotula, P. G. , Chu, F. , 1998

机译：形成亚稳态bcc固溶体并在熔纺CrNb（sub 10）Ti（sub 10）中分解成C15 Laves相

Formation of a metastable bcc solid solution and decomposition to a C15 Laves phase in melt-spun CrNb(sub 10)Ti(sub 10)

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