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to the microstructure evolution during the heat treatment. Key words: Cu-4Cr-2Nb alloy; coating; cold spraying; vacuum heat treatment; microstructure; microhardness 1 Introduction Continuous efforts are under... Effect of vacuum heat treatment on microstructure and microhardness of cold sprayed Cu-4Cr-2Nb alloy coating LI Wen-ya(李文亚), GUO Xue-ping(郭学平), L. DEMBINSKI, LIAO Han-lin(廖汉林......
, United Kingdom Received 20 September 2016; accepted 5 April 2017 Abstract: The evolution of microstructure and microhardness was studied in a commercial tungsten-25% rhenium (mass fraction) (W-25Re...); W-25Re alloy; microstructure; Hall-Patch relationship; microhardness evolution 1 Introduction Tungsten-25% rhenium (mass fraction) (W-25Re) alloy has been usually manufactured into wire......
℃ on the microstructural characteristics and microhardness of the Sn-6.5Zn solder/Cu joint was studied. The mechanisms for the formation and evolution of intermetallic compound (IMC) at the interface of the Sn-6.5Zn..., the characteristics of the interface and evolution of the microstructure of Sn-6.5Zn solder/Cu substrate joints during aging at 150 ℃ for a long period are investigated. The microhardness......
; 文献标识码: A Microstructure, phase structure and microhardness of as-cast Ti-Sc binary alloys LIU Hui-qun1, YI Dan-qing1, XIAO Lai-rong1, WANG Bin1, LU Bin1, HUANG... 20506, Sweden) Abstract: Four kinds of Ti-Sc binary alloys were prepared by vaccum arc melting technique. Microstructure, phase components and microhardness of different phases were analyzed by optical......
were evaluated by XRD and SEM, respectively. Microhardness tests were performed on the surface of sintered samples. The results indicated that milling time has an effect on the shape and particle size... that sintering is controlled mainly by volume diffusion. Microhardness was improved by increasing the milling time and the heating rate. Key words: Ni-based shape memory alloy; mechanical milling; solid......
and microstructure evolution of W-TiC alloy ZHANG Shun, FAN Jing-lian, CHENG Hui-chao, TIAN Jia-ming, CHENG Chuang-gong (State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: A W-TiC alloy was fabricated by powder metallurgy method, and the sintering densification behavior and microstructure evolution of the alloy were investigated. Experimental results show......
3003 during annealing was investigated by microhardness measurements. Fig.1 shows the microhardness evolution at 300 and 500 ℃ for various holding time. In theory, the microhardness evolution should... Microstructural evolution of aluminum alloy 3003 during annealing WU Wen-xiang(吴文祥)1, ZHANG Xin-ming(张新明)2, SUN De-qin(孙德勤)1, HU Guo-qiang(胡国强)1, LIU Guo-jin(刘国金)1 1. Suzhou Institute......
, microstructure and elemental distribution of the coatings were analyzed by optical microscopy (OM), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The microhardness of the coatings were tested with microhardness tester. The results show that the element composition on the substrate can cause the differences of pores and cracks. The pores and cracks of the coatings on 304......
: magnesium alloy; multidirectional forging; microstructural evolution; mechanical property; microhardness ... 文献标识码:A Microstructural evolution and mechanical property......
and the aspect ratio of primary α grain increases with increasing wall reduction. The recrystallization fraction and microhardness increase with increasing reduction.Key words:microstructure evolution; hot...Microstructure evolution of TA15 titanium alloy during hot power spinningCHEN Yong, XU Wen-chen, SHAN De-bin, GUO Bin(School of Materials Science and Engineering, Harbin Institute of Technology......
