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Microstructure evolution of processed Mg-Al-Zn alloy by equal channel angular extrusion in semi-solid isothermal treatment JIANG Ju-fu(姜巨福), LUO Shou-jing(罗守靖) School of Materials Science... extrusion(ECAE) in semi-solid isothermal treatment was investigated. The results show that with increasing semi-solid isothermal treatment temperature, the α phase solid grain size of processed Mg-Al......
COMPUTER AIDED ANALYSIS FOR COLD ROLL FORMING THIN CHANNEL SECTION Z.W.Han1,C.LIN2,L.Q.Ren1,Y.Q.Nie3 (1.Key Laboratory of Terrain Machine Bionic Technology, Jilin University, Changchun 130025... is developed to analyze cold roll forming of a thin channel section. The longitudinal membrane strain values on the edge of the deformed strip for four one-pass sequences in different fold angles are got......
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be identified as τ2 phase. The τ2 phase is located in the triple junction of the β and γ phases. Fig. 6 Fe-Ti-Al isothermal section at 1000 °C [19] Surface analysis results of the oxidized LOC, MOC...Trans. Nonferrous Met. Soc. China 29(2019) 526-533 Isothermal oxidation behavior of TiAl intermetallics with different oxygen contents Kun ZHAO1, Si-hui OUYANG1, Yong LIU1, Bin LIU1, Xiao-peng LIANG2......
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composites with various needled preforms prepared by isothermal chemical vapor infiltration TANG Su-fang(汤素芳), WANG Dao-ling(王道岭), DENG Jing-yi(邓景屹), LIU Wen-chuan(刘文川), YANG Ke(杨 柯) (Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China) Abstract: The ablation properties of C/C composites with four different needled preforms prepared by isothermal chemical vapor......
of load and velocity versus stroke during isothermal forging 图3 航空接头锻坯结构示意图 Fig. 3 Schematic diagram of preform of aviation forging 图4 航空接头终锻件结构示意图 Fig. 4 Schematic diagram of aviation forging formed by isothermal forging 2.2 显微组织分析 从航空接头锻件上选取一截面,如图4虚线框所示位置,在截面上选择4个部位对航空接头锻件进行金相分析,如图5所示.从航空接头锻件的金相图(见图6)可知,航空接头锻件a,c位置在锻压成形的开始阶段就基本完成变形,金属流动较平缓,没有出现条状晶粒分布.金属流动比较剧烈的部位为b,d位置,晶......
particle. To testify the proposed approach, oxygen consumption rates at high temperature were measured by the programmable isothermal oven experiments. Comparisons between experimental and theoretical... words: self-ignition of coal; oxygen consumption rate; oxygen transport; timescale; critical temperature; programmable isothermal oven experiment Cite this article as: YIN Wen-tao, SONG Ze-yang......
on the flow stress, strain rate sensitivity (m), strain hardening exponent (n), apparent activation energy (Q) for deformation of Ti-5Al-2Sn-2Zr-4Mo-4Cr alloy were investigated using isothermal compression... and dynamic globularization of α phase. In the strain range of 0.15-0.55, Q of the alloy with alpha plates is larger. Key words: titanium alloy; isothermal compression; flow stress; microstructure......
Trans. Nonferrous Met. Soc. China 20(2010) s768-s773 Microstructural evolution of Mg9AlZnY alloy with vibration in lost foam casting during semi-solid isothermal heat treatment...) and the microstructure of Mg9AlZnY alloy was analyzed. On this basis, the morphology and size of a-Mg grains fabricated by semi-solid isothermal heat treatment(SSIT) at 530 ℃ and 570 ℃ holding different time were studied......