共搜索到6761条信息，每页显示10条信息，共677页。用时：0小时0分0秒523毫秒
of directionally solidified DZ125 superalloy were investigated under high thermal gradient about 500 K/cm. The results reveal that, with increasing cooling rate, both the spacings of primary and secondary...Effect of cooling rates on dendrite spacings of directionally solidified DZ125 alloy under high thermal gradientZHANG Weiguo, LIU Lin, ZHAO Xinbao, HUANG Taiwen, YU Zhuhuan, QU Min, and FU Hengzhi......
Calculation of cooling rate of amorphous aluminum alloy melt-spun ribbons HE Shi-wen (何世文), LIU Yong(刘 咏), LIU Zu-ming(刘祖铭), HUANG Bai-yun(黄伯云) State Key Laboratory of Powder Metallurgy... gradient, the relationship between the ribbon thickness and solidification time was derived according to the boundary conditions of ribbon-copper wheel. A simply theoretical model was obtained to calculate......
J. Cent. South Univ. (2020) 27: 963-972 DOI: https://doi.org/10.1007/s11771-020-4344-8 Dynamic response and failure of rock in initial gradient stress field under stress wave loading WENG Lei(翁磊)1... GmbH Germany, part of Springer Nature 2020 Abstract: Once an opening is created in deep underground, the stresses surrounding the opening will be redistributed, inducing a gradient stress field......
Article ID: 1003-6326(2005)02-0389-06 Simulation of cooling channel rheocasting process of A356 aluminum alloy using three-phase volume averaging model T. Wang1, 3, B. Pustal1, M. Abondano1, T..., Austria; 3. Research Center of Foundry Engineering, Dalian University of Technology, Dalian 116024, China) Abstract: The cooling channel process is a rehocasting method by which the prematerial......
Coupled Effects of Temperature Gradient and Oxidation on the Thermal Barrier Coating Failure Y.C.Zhou1,T.Hashida1 (1.Fracture Research Institute, Tohoku University, Sendai, Japan;2.Institute... gradient and oxidation on the failure of thermal barrier ceramic coatings in the past ten years in our laboratory. The investigations include the experimental and theoretical study. On the experimental......
Fabrication of CTP/HAp novel gradient composite bioceramics SHEN Mei-ling(申美玲), ZHAO Zhong-wei(赵中伟), WEN Shi-mei(文士美), CHEN Xing-yu(陈星宇), LI Hong-gui(李洪桂) School of Metallurgical Science...; Abstract: Calcium-titanium-phosphate(CaTi4(PO4)6, CTP)/hydroxyapatite(HAp) is a kind of novel gradient......
ELASTOPLASTIC OPTIMUM DESIGN OF Ni/TiC FUNCTIONAL GRADIENT MATERIAL南策文,张清杰,蔡克峰,闵新民,袁润章摘 要:<正>The thermal residual stresses developed in a disk-shaped.Ni/TiC functionally gradient material (FGM) during its fabricationare investigated by an elastic-plastic finite element numerical ap-proach.Constitutive relations for the graded Ni-TiC composite......
Research on Test Unit for Determining Cooling Characteristics of Quenchants CHEN Nai-lu1,LI Lin-lin1,LIU Zhan-cang1,ZHANG Wei-min1,LIU Yang1 (1.School of Material Sci & Eng , Shanghai Jiao Tong University, Shanghai, 200030, China) 摘要:According to ASTM Designation DXXXX Standard Test Method for Determination of Cooling Characteristics of Quenchants by Cooling Curve Analysis with Agitation......
Grain-size gradient NiTi ribbons with multiple-step shape transition prepared by melt-spinningXiangguang Kong1,Ying Yang1,Shiyu Guo1,Ran Li2,Bo Feng1,Daqiang Jiang1,Meng Li3,Changfeng Chen4,Lishan... of Petroleum Beijing摘 要:A grain-size gradient Ni Ti ribbon with multiple-step shape transition was papered by means of meltspinning. The ribbons contain......
Phase Transformation and Carbide Precipitation of Functional Gradient Semi-solid 9Cr18 SteelYong-Jin Wang1,2,Ren-Bo Song1,Ren-Feng Song31. School of Materials Science and Engineering, University... transformation and carbide evolution in 9Cr18 steel were investigated during semi-solid forming and subsequent heat treatment. The functional gradient thixoforging 9Cr18 component was divided into inner......
