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dischargeability, and the improved cycling stability is due to their lower volume expansion on hydriding and more uniform composition. Key words: hydrogen storage alloy; Co-free alloy; material processing...) is a promising way to reduce the alloy pulverization[6-8], and the cycling stability of the AB5 alloys with different Co contents can also be improved by different material processing methods such as heat......
Trans. Nonferrous Met. Soc. China 29(2019) 2281-2289 Effect of knurling shoulder design with polygonal pins on material flow and mechanical properties during friction stir welding of Al-Mg-Si alloy... Received 29 December 2018; accepted 20 September 2019 Abstract: Understanding the material flow facilitated by tool geometry in friction stir welds is challenging for quality weld production......
for nonferromagnetic metal material testing HAO Kuan-sheng(郝宽胜), HUANG Song-ling(黄松岭), ZHAO Wei(赵伟), DUAN Ru-jiao(段汝娇), WANG Shen(王珅) State Key Laboratory of Power Systems, Department of Electrical Engineering... words: metal material nondestructive testing; electromagnetic acoustic transducer; multi-field coupling; Garlerkin method; finite element 1 Introduction The metal material could be destructed......
materials were studied using the pin-on-disc method. The friction coefficient of Ti3SiC2-based material was not very sensitive to normal load, the steady state value, μ, increased from 0.4 to 0.5... material was 9.9×10-5 mm3/Nm. The debris on the Ti3SiC2 disc was essentially made up of Ti3SiC2 and steel pin materials, while the debris on the steel sliders was generally pin material. The wear mechanism......
Properties of vacuum cast CuCr25 and CuCr25Te contact material XIU Shi-xin(修士新)1, YANG Ren(杨 韧)2, XUE Jun(薛 军)3, WANG Jin-xing(汪金星)3 1. State Key Laboratory of Electrical Insulation... element has both advantages and disadvantages on main properties of CuCr contact material. Key words: Te; CuCr contact material; vacuum cast  ......
STUDY ON Na2Y1-xCrxSi4O12 CONDUCTIVE MATERIAL崔万秋,蔡飞虎,徐长海摘 要:<正> Na5Y1-XCrXSi4O12 conductive ceramicsare prepared by solid phase reaction.Crystal phase and microstructure arestudied by using X-ray diffraction (XRD),infrared spectrum and TEM.Conductivityof samples from room temperature to350℃ is measured by admittance bridge.The best composition......
几种黄铁矿破碎后破裂面上的原子分布特征于宏东1,2,孙传尧2(1.北京市北京科技大学2.北京市北京矿冶研究总院 矿物加工科学与技术国家重点实验室)摘 要:采用EBSD分析技术和Material Studio科学软件研究几种黄铁矿破裂面上的原子分布特征.结果表明,不同产地黄铁矿破裂后其破裂面不仅具有择优取向,同时因产地不同它们的破裂面的晶体学取向也不同,不同破裂面上Fe和S原子的密度不同. 关键词:工艺矿物学; 黄铁矿; EBSD; Material Studio; 晶体取向; 原子密度......
Microstructure and performance of dissimilar joint QCr0.8/TC4 welded by uncentered electron beamLIU Wei,ZHANG Binggang,HE Jingshan and ZHAO Haisheng State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,China摘 要:The mechanical property of dissimilar metal joint between QCr0.8 and TC4 alloy made......
Ultrasonic vibration assisted tungsten inert gas welding of dissimilar magnesium alloysFangzhou Yang1,2,Jie Zhou1,Rongrong Ding11. College of Materials Science and Engineering,Chongqing University2... assisted(UVA) treatment on the microstructures and mechanical properties of MB3/AZ31 dissimilar magnesium(Mg) alloy joints were studied by microstructural characterization, micro-hardness testing......
Interfacial bonding mechanism in Al/coated steel dissimilar refill friction stir spot weldsZ.Shen,Y.Ding,J.Chen,B.Shalch Amirkhiz,J.Z.Wen,L.Fu,A.P.Gerlich摘 要:Defect-free dissimilar Al/zinc coated steel and Al/AlSi coated steel welds were successfully fabricated by refill friction stir spot welding. However, Al alloy and uncoated steel could......