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Strengthening and stress drop of ultrafine grain aluminum after annealing REN Jiang-wei(任江伟)1, SHAN Ai-dang(单爱党)2 1. School of Materials Engineering, Shanghai University of Engineering Science... and the formation of shear band is responsible for it. Key words: aluminum; ultrafine grain; mechanical properties; heat treatment 1 Introduction Ultrafine grain materials especially nanomaterials have aroused......
:Ultrafine austenite grain; Growth; Microalloyed steel; Second-phase particle; [全文内容正在添加中] ...Growth behavior of ultrafine austenite grains in microalloyed steel Shengjie YAO1,Linniu DU1,Guodong WANG1,Xianghua LIU1 (1.State Key Laboratory of Rolling and Automation,Northeastern University......
EFFECT OF INITIAL GRAIN SIZE ON STATIC RECRYSTALLIZA-TION SOFTENING IN Cr STEEL USING STRESS RELAXATION TECHNIQUE A.R.Morgridge1 (1.Mechanical Engineering Dept. of University of Ibadan, Ibadan, Nigeria) Abstract:Effect of initial grain size (I.G.S.) on static recrystallization softening in Cr steel(0.77wt.% CR) has been investigated through the use of interrupted hot compressiontests......
sintering for 60 min at 1 400 ℃, the average grain size and hardness of ultrafine-grained WC-10Co-1VC cemented carbide are 470 nm and HRA 91.5, respectively. The fracture toughness of cemented carbide... temperature and holding time. Fig.3 Average grain size of WC in sintered alloys Fig.4 shows SEM images of the fractured surface of ultrafine WC-10Co cemented carbide after sintering for 60 min at 1 400......
:1672-7207(2015)01-0081-07 Effect of LaB6 addition on microstructure and mechanical properties of ultrafine grain WC-Ni3Al alloys XIAO Daihong, LI Xiuxiu, SHEN Tingting, SONG Min (State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: The ultrafine grain WC-Ni3Al alloys with different LaB6 contents were prepared by ball milling and low pressure sintering......
Trans. Nonferrous Met. Soc. China 22(2012) s673-s677 Grain size dependence of flow stress in ECAPed Ti with constant texture Chang-Young HYUN1, Ho-Kyung KIM2 1. Department of Materials Science... and Technology, 172 Kongneung-dong, Nowon-ku, Seoul 139-743, Korea Received 21 May 2012; accepted 22 September 2012 Abstract: The effect of grain size on the flow stress in an ECAPed Ti with a constant......
to investigate the microstructural and mechanical characteristics of the FSW joint. The results indicate that an ultrafine grained microstructure with the mean grain size of ~0.7 μm is obtained in the weld nugget...J. Cent. South Univ. (2012) 19: 2081-2085 DOI: 10.1007/s11771-012-1248-2 Underwater friction stir welding of ultrafine grained 2017 aluminum alloy WANG Kuai-she(王快社), WU Jia-lei(武佳蕾), WANG Wen(王文......
Texture Evolution and Ultrafine Grain Formation in Cross-Cryo-Rolled Zircaloy-2D.Srivastava3,G.K.Dey33. Materials Science Division,Bhabha Atomic Research Center摘 要:ultrafine grains.关键词:......
performance of ultrafine silver powder WEI Li-li1, XU Sheng-ming1, 2, XU Gang1, CHEN Song-zhe1, LI Lin-yan1 (1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China; 2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: The preparation of ultrafine silver powder was investigated by reducing Ag(NH3)2......
Synthesis and Characterization of Gadolinium Doping M-type Hexagonal Barium Ferrite Ultrafine Powders 郭睿倩1,顾明元1,陈亚杰3,梁乐1,孙培梅4,金燕萍1,李洪桂4 (1.State Key Laboratory of MMCs, Shanghai Jiaotong University.... The crystal structure, grain size, shape and magnetic properties were studied by means of XRD, TEM and vibrating sample magnetometer.The results show that under the conditions of pH 7.0 or so, mole......