共搜索到17953条信息,每页显示10条信息,共1796页。用时:0小时0分0秒473毫秒
......
......
Laves相; 晶格占位; 合金化; 力学性能 中图分类号: TG111.2; TG111.91 文献标识码: A Lattice-substitution of alloying elements and its influences on mechanical properties of ZrCr2 Laves phase ZHOU Ou, YAO Qiang, SUN Xue... in the ZrCr2 Laves phase was analyzed by Rietveld simulation and X-ray diffractiometry. The effects of alloying on mechanical properties were also investigated. The results show that the alloying elements......
Effect of ball milling time on microstructure and properties of Laves phase NbCr2 alloys synthesized by hot pressing XIAO Xuan(肖 璇)1, 2, LU Shi-qiang(鲁世强)1, HU Ping(胡 平)1, HUANG Ming-gang(黄铭刚)1...; 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......
......
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......
P92钢625℃持久性能分段特征与各段中M23C6及Laves相相参数的定量变化研究彭志方1,蔡黎胜1,彭芳芳2,胡永平3,陈方玉4(1.湖北省武汉市武汉大学动力与机械学院2.东方锅炉(集团)股份有限公司材料研究所3.内蒙古北方重工业集团有限公司特殊钢厂4.武汉钢铁(集团)公司研究院检测所)摘 要:研究了P92钢在625℃下加载应力与断裂时间关系曲线的分段特征以及各试样中M23C6及Laves相参数的定量变化.结果表明,根据该钢在625℃,110-180 MPa条件下的持久实验得到的应力-断裂时间关系曲线的变化趋势,可将该曲线分为高应力-短时段(180-150 MPa,30-454 h)和低应力-长时段(140-110MPa,2881-10122 h)两个特征段;在高应力-短时段,M23C6相颗粒聚集与粗......
Precipitation of Icosahedral Quasicrystalline Phase, R-phase and Laves Phase in Ferritic Alloys Yoshisato Kimura1,Keisuke Yamamoto1,Yoshinao Mishima1 (1.Department of Materials Science...-added Fe-10Cr-1.4W-4.5Co-0.3Si (at%) alloy are the icosahedral quasicrystalline phase. The precipitates in both the Si-free and Si-added alloys aged at 973K are the Laves phase. Matrix of the alloys......