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Synthesis of Vanadium Carbide Nanopowders via Mechanical Alloying and Microwave Heating Methods杨宝震,ZHENG Hongjuan,赵志伟,ZHENG Juan,CHEN FeixiaoSchool of Material Science and Engineering, Henan University of Technology摘 要:A simple and fast method of preparation of vanadium carbide(V8 C7) nanopowders using mechanical alloying assisted microwave heating......
of surface scale on single crystal nickel-base superalloy castings[6]. Intentional carbon addition also affects the segregation behaviour of the alloying elements. Comparison of experimentally measured... Effect of carbon on microstructure and mechanical properties of DD99 single crystal superalloy YU Jin-jiang(于金江), SUN Xiao-feng(孙晓峰), ZHAO Nai-ren(赵乃仁), Jin Tao(金 涛), Guan heng-rong(管恒荣), HU......
of alloying elements Ti and Be on the microstructure and mechanical properties of Mg58.5Cu30.5Y11 alloy were discussed. The results show that CuTi phase is distributed in (Mg0.585Cu0.305Y0.11)90Ti10... region of 10 samples of each alloy. Key words: Mg-based alloy; alloying element; Ti; Be; microstructure; strength reliability 1 Introduction Among the family of bulk metallic glasses (BMGs), Mg-based......
is found under the optical microscope, demonstrating that the effects of primary productivity decline and early diagenesis of carbon isotopic composition is generally minor to the foraminiferans. 5...J. Cent. South Univ. (2012) 19: 1728-1740 DOI: 10.1007/s11771-012-1200-5 Carbon and oxygen isotope characteristics of foraminiferan from northern South China Sea sediments and their significance......
. Furthermore, the nc-TiAlN/a-Si3N4 coating shows the best machining performance. Key words: TiN coating; alloying element; hardness; cutting test 1 Introduction TiN coatings, which have served... were done by alloying TiN based coatings with several elements acting in different ways [3-5]. Among them, the coatings by the incorporation of Al and Si into TiN attract more attention for cutting......
; 文献标志码:A 文章编号:1672-7207(2010)05-1743-06 Effect of carbon nanotubes growth on carbon fibers on microstructure of pyrolytic carbon matrices of C/C composites CHEN Jie, XIONG Xiang, WANG Zhan-feng (State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: Carbon nanotubes......
MOTIONS OF ALLOYING ADDITIONS IN GAS STIRRED LADLES B.K.Li1,S.C.Fan1,J.C.He1 (1.Department of Thermal Engineering, Northeastern University, Shenyang 110004, China) Abstract:A mathematical model... bodyfitted coordinate system (BFC). Consequently, computed flow of molten steel and paths of alloying additions are able to cross smoothly the geometric centerline of cylindrical vessel. Second, motion......
and balls(Alloy 1).Nevertheless,Cu–7 wt%Nb powders milled by tungsten carbon vials and balls exhibited an amorphous phase(Alloy 2).The as-milled powders were then vacuum hot-pressing sintered.The......
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