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Wear behavior of Al-Si alloy matrix composites reinforced by γ-Al2O3 decomposed from AACH FU Gao-feng(付高峰)1, ZHANG Jing-xin(张景新)2, LIU Ji(刘 吉)1, WANG Zhao-fei(王肇飞)1 1. School of Materials... composite; Al2O3 particles; microstructure; wear 1 Introduction The particles reinforced aluminium alloy matrix composites, which possess high-specific elastic modulus and strength, are being widely......
; 1... 1) A large number of deformation bands are observed in the cold-swaged TNTZO alloy. No single dislocation or dislocation pile-ups can be distinguished from the deformation bands of the cold-swaged......
; 1 INTRODUCTION Ni-based superalloys are presently used as gas turbine components in power plants and in aircraft engines[1-3]. Since 1970s, Al has been... in Fig.5(a), though the exquiaxed dimples with little depth are dominant in this region, and some pores are observed. Furthermore, there are no tearing ribs. Therefore, elongation value is less than 1......
are in reasonably good agreement with the measured ones. Key words: electromagnetic stirring; semi-solid slurry; numerical simulation; microstructure 1 Introduction To obtain Al alloys semi-solid slurry... of 50 A Fig.7 Microstructures of A357 alloys by normal EMS (a) and A-EMS at frequency of 50 Hz and current of 10 A (b) 5 Conclusions 1) The magnetic flux density increases, the melt......
analyzed, which can be reduced greatly by imposing proper backpressure in the bulging process. Key words: Al-Mg-Sc alloy; aluminum alloy; superplasticity; formability; cavity; backpressure 1 Introduction... Conclusions 1) The coarse-grained Al-6Mg-0.2Sc alloy has good superplasticity at 400-500 ℃. At 450 ℃ and an initial strain rate of 2×10-4 s-1, the uniaxial tensile elongation is 421% and the constitutive......
; gas porosity; strontium 1 Introduction It is commonly known that the strength and quality of an Al-Si alloy casting are determined by its microstructure and the amount of porosity present... patterns of surface oxide film layer of Sr-modified melt and RE-modified A356 melt at 710℃: (a) A356+ 0.15%Al-10Sr; (b) A356+2.5%Al-10RE 4 Conclusions 1) Sr-modification enhances the hydrogen......
Electropolishing parameters of NiTi alloy MIAO Wei-dong(缪卫东)1, MI Xu-jun(米绪军)2, WANG Xin-lu(王新录)1, LI Hua-chu(栗华矗)1Li Rui (李锐) 1. General Research Institute for Nonferrous Metals, Beijing 100088... a near sigmoidal law. The practical spacing between anode and cathode is confirmed by the Hall bath experiment. Key words: NiTi alloy; nitinol; electropolishing; processing parameters 1 Introduction......
Martensitic transformation and mechanical properties of Ti-rich Ti-Ni-Cu melt-spun ribbon HE Wen-jun(何文军)1, MIN Guang-hui(闵光辉)2, YIN Yan-sheng(尹衍升)1, O. TOLOCHKO3 1. Institute...; 1 Introduction Ti-Ni-Cu ternary shape memory alloys (SMAs......
Anti-oxidation behavior of chemical vapor reaction SiC coatings on different carbon materials at high temperatures YANG Xin(杨 鑫)1, HUANG Qi-zhong(黄启忠)1, ZOU Yan-hong(邹艳红)2, CHANG Xin(常 新)1, SU Zhe-an(苏哲安)1, ZHANG Ming-yu(张明瑜)1, XIE Zhi-yong(谢志勇)1 1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 2. Materials Science and Engineering......
Processing map for hot working of SiCp/7075 Al composites M. RAJAMUTHAMILSELVAN1, S. RAMANATHAN1, R. KARTHIKEYAN2 1. Department of Manufacturing Engineering, Annamalai University...; 1 Introduction FROST and ASHBY[1] and PRASAD[2] were the first to represent the material response in terms of processing maps, and they draw plots of true stress vs temperature showing......
