共搜索到4572条信息，每页显示10条信息，共458页。用时：0小时0分0秒758毫秒
Engineering, Taizhou University, Taizhou 318000, China) Abstract: Ni47Mn32Ga21 polycrystalline alloy was prepared by the directional solidification technique. The structure of the alloy were investigated...; directional solidification; martensitic transformation; shape memory alloy; magnetic-field- induced strain 铁磁性形状记忆合金Ni2MnGa是兼有热弹性马氏体相变和铁磁性转变的新型功能材料.它不仅可以在温度,压力场作用下诱发形状记忆效应,而且还可以在磁场作用下产生形状记忆效应.由于其在磁场控制下的形状记忆具......
:定向退火；晶界迁移率；柱状晶；相场法 中图分类号:TG111 文献标志码:A Phase field simulation of formation and continuous propagation of columnar grain structure during directional annealing LUO Zhi-rong1...: Based on the moving hot zone model under directional annealing, the effects of the hot zone width on the formation and continuous propagation of columnar grain structure during directional annealing......
Microstructure and mechanical properties of AZ61 Mg alloy prepared by multi directional forging H. MIURA1, G. YU1, X. YANG2, T. SAKAI1 1. Department of Mechanical Engineering and Intelligent... deformation; multi directional forging ......
directional solidification(DS) furnace.Microstructural parameters including the primary dendrite arm spacing(λ1),secondary dendrite arm spacing(λ2),dendrite tip radius(R) and mushy zone depth(d) were...Growth rate and composition of directionally solidified intermetallic TiAl–Nb alloys with different solidification conditionsLi-Wei Zhang1,Jun-Pin Lin1,Xiang-Jun Xu2,Jian-Ping He1,Xian-Fei Ding3,Xiao......
J. Cent. South Univ. Technol. (2008) 15: 6-10 DOI: 10.1007/s11771-008-0002-2 Directional migration behavior of cerium during sintering process of mischmetal doped cemented carbide... spectroscopy (EDXS), considering the fact that the addition amount of rare earth in the alloy is very minute. The directional migration process and mechanism of cerium were discussed. First, the sinter......
to systematically reveal the mechanisms on the optimizations at each stage of solidification process. Current findings demonstrate that different directional strong melt flows generated by TMF are responsible... solidification intervals and multi-phase. Accordingly, finding ways to effectively optimize the microstructure and mechanical performance is of great significance. In this regard, the coupling......
Solidification Behavior of Immiscible Alloys under the Effect of a Direct CurrentHongxiang Jiang,Jiuzhou Zhao,Jie HeInstitute of Metal Research,Chinese Academy of Sciences摘 要:Directional solidification experiments were carried out with Al-Pb alloys under the effect of a direct current(DC).The experimental results show that the DC causes a migration......
of fcc crystals and the carbide growth rate during directional solidification.关键词:...Effect of Solidification Condition and Carbon Content on the Morphology of MC Carbide in Directionally Solidified Nickel-base SuperalloysX.W.Li,L.Wang,J.S.Dong,L.H.LouSuperalloys Division, Institute......
by directional solidification, and its microstructure and tensile properties at elevated temperatures were investigated. Microstructure observations reveal that the γ′ precipitates are arrayed in the γ matrix... content of γ′. In addition, the carbides and eutectic structure also contribute some to the ITB behaviors of the alloy. Key words: nickel-based superalloy; directional solidification; anomalous yield......
抽拉速率对定向凝固Ti-47Al-2Cr-2Nb-0.8B合金组织的影响杨莉莉1,郑立静1,肖志霞1,闫洁1,张虎1(1.北京市北京航空航天大学材料科学与工程学院)摘 要:研究了4种抽拉速率(0.36,5,10和20 mm/min)获得的定向凝固Ti-47Al-2Cr-2Nb-0.8B合金的凝固组织,硼化物形态以及B对合金晶粒的细化作用.结果表明,抽拉速率影响了合金凝固的初生相,硼化物种类和硼化物析出的顺序,从而形成了不同的凝固路径.在不同的凝固路径下,合金的晶粒细化效果和硼化物的形态均不同.当抽拉速率为5 m......
