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Effect of melt convection on primary dendrite arm spacing in directionally solidified Pb-26%Bi hypo-peritectic alloys HU Xiao-wu, LI Shuang-ming, GAO Si-feng, LIU Lin, FU Heng-zhi State Key Laboratory of Solidification Processing, Northwestern Polytechnical University,Xi’an 710072, China Received 7 December 2009; accepted 15 April 2010 Abstract: Primary dendrite arm spacing (PDAS) of α......
形维数出现波折；电解质浓度的增大使枝晶簇的分形维数逐渐减小；且随着试验温度的提高,分形维数也随之增加. 关键词:镍；射流电沉积；分形生长；枝晶 中图分类号:TQ 153 文献标识码:A Fractal growth of dendrite electrodeposited by point anode WANG Gui-feng1, 2..., Nanjing 210016, China; 2. School of Mechanical and Electronic Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China) Abstract: The fractal growth process of dendrite......
Trans. Nonferrous Met. Soc. China 22(2012) 147-156 Significance-based optimization of processing parameters for thin-walled aluminum alloy tube NC bending with small bending radius XU Jie, YANG He...; accepted 27 June 2011 Abstract: Thin-walled aluminum alloy tube numerical control (NC) bending with small bending radius is a complex process with multi-factor coupling effects and multi-die......
Fatigue crack tip plastic zone of α+β titanium alloy with Widmanstatten microstructureYingjie Ma1,2,Sabry S.Youssef1,2,Xin Feng1,Hao Wang1,2,Sensen Huang1,3,Jianke Qiu1,Jiafeng Lei1,2,Rui Yang1,21... crack propagation resistance and fracture toughness as compared to other microstructures,which was believed to be related to the fatigue crack tip plastic zone(CTPZ). In this study, the plastic......
=3.67 K/mm) in a Bridgman furnace.Microstructure parameters,such as primary dendrite arm spacing (λ1),secondary dendrite arm spacing (σ2),and dendrite tip radius (R),were measured.The microhardness (Hv......
Grain and dendrite refinement of A356 alloy with Al-Ti-C-RE master alloyHong-Liang Zhao,Jin-Sheng Yue,Ya Gao,Kang-Rong WengCollege of Materials Science and Engineering, Zhengzhou University摘 要:
An analytical model for the prediction of cross-section profile and mean roll radius in alloy bar rollingYonggang Dong~(1)) Wenzhi Zhang~(1)) Jianfeng Song~(2)) 1)School of Mechanical Engineering... and the coordinates of the critical point were solved.The equivalent contact section area was represented and the mean roll radius was determined.The validity of this model was examined by alloy bar......
and Engineering,Sichuan University摘 要:Radially oriented Nd–Fe–B ring magnets were prepared by backward extrusion of MQ-C powder. The punch chamfer radius has a great impact on the microstructure and magnetic properties of the ring magnet. With the chamfer radius changing from 2, 5 to 8 mm, the cracks in the inner wall decrease obviously while......
Application of non-equilibrium dendrite growth model considering thermo-kinetic correlation in twin-roll castingYubing Zhang1,Jinglian Du1,Kang Wang1,Huiyuan Wang2,Shu Li3,Feng Liu1,41. State Key... non-equilibrium solidifications, dendrite growth, generally as precursor of as-solidified structures,has severe effects on subsequent phase transformations. Considering synergy of thermodynamics......
