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H13热作模具钢纯净度研究熊海波1,李晶1,谭兵2,陈雪梅2,张波2(1.北京市北京科技大学 冶金与生态工程学院2.广州市冶金工业研究所)摘 要:采用中频炉-模铸-电渣重熔-退火工艺路线,生产H13热作模具钢.研究了冶炼过程中T.[O]总含量[H],[S]含量及大型夹杂物的变化规律.结果表明,采用该工艺生产的H13 T.[O]含量为42×10-6~56×10-6,[H]含量为1.6×10-6~3.0×10-6,[S]含量为0.004%~0.005 5%,大型夹杂物含量为1.1~2.24 mg/10 kg.具体研......
℃ and strain rate of 0.001 s-1, and its power dissipation efficiency approximately corresponds to 36%, which should be considered the optimum parameters for hot working of squeeze cast ZK60 magnesium...]. The aim of the present investigation is to develop a processing map for hot working of magnesium alloy with a view to understand its constitutive flow behavior and optimize its hot workability......
Effect of ball milling time on microstructure and properties of Laves phase NbCr2 alloys synthesized by hot pressing XIAO Xuan(肖 璇)1, 2, LU Shi-qiang(鲁世强)1, HU Ping(胡 平)1, HUANG Ming-gang(黄铭刚)1...; Abstract: Laves phase NbCr2 alloys with a composition of Nb-66.7Cr (molar fraction, %) were prepared by mechanical alloying and hot pressing. The microstructures and properties of the Laves phase NbCr2......
] Mcqueen H J, Fry E, Belling J. Comparative constitutive constants for hot working of Al-4.4Mg- 0.7Mn(AA5083)[J]. Journal of Material Engineering and Performance, 2001, 10(2): 164-172. [4] Aghaie... stress feature of 99.992% aluminum under hot compression deformation[J]. Hot Working Technology, 2004 (9): 17-19.(in Chinese) [8] FU Gao-sheng. Study on Metallurgical Quality and Deformation Behavior......
- mechanical process. The flow stress, deformation temperature and strain rate are three basic parameters for characterizing hot working processes of alloys. The flow softening mechanisms, including... (DMM), are being widely used to optimize the hot working conditions of the steels [11], titanium alloys [12], copper alloys [13], magnesium alloys [14], and aluminum alloys [15, 16]. Unfortunately......
, ZHANG Hong-bing, RUAN Xue-yu, LUO Zhong-hua, ZHANG Yan. Kinetics for static recystallization after hot working of 0.38C-0.99Cr-0.16Mo steel [J]. Journal of Central South University of Technology, 2004...J. Cent. South Univ. Technol. (2008) 15: 575-580 DOI: 10.1007/s11771-008-0108-6 Hot deformation behaviors and flow stress model of GCr15 bearing steel LIAO Shu-lun(廖舒纶)1, 2, ZHANG Li-wen(张立文)1......
J. Cent. South Univ. (2020) 27: 2578-2591 DOI: https://doi.org/10.1007/s11771-020-4483-y Springback prediction of TC4 titanium alloy V-bending under hot stamping condition YANG Xiao-ming(杨晓明)1... Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract: In this paper, the springback of TC4 titanium alloy under hot stamping condition was studied by means of experiment......
of the rolling passes. In particular, the average grain size of the alloy reduces rolling passes in the starting as-homogenized state, as shown in Fig.3. In general, for hot working with dynamic... Grain refining and property improvement of AZ31 Mg alloy by hot rolling MIAO Qing(苗 青), HU Lian-xi(胡连喜), SUN Hong-fei(孙宏飞), WANG Er-de(王尔德) School of Materials Science and Engineering......
and untwinning in yielding behavior in hot-extruded Mg-Al-Zn alloy [J]. Acta Mater, 2007, 55(3): 897-905. [6] BEER A G, BARNETT M R. Influence of initial microstructure on the hot working flow stress... stress during initial stage of hot compression of twin roll cast Mg-5.51Zn-0.49Zr alloy LIU Zhi-yi(刘志义)1, 2, XU Jing(徐静)1, 2, HOU Yan-hui(侯延辉)1, 2, KANG S. B.3 1. Key Laboratory of Nonferrous Metal......
J. Cent. South Univ. (2020) 27: 1654-1665 DOI: https://doi.org/10.1007/s11771-020-4397-8 Microstructure and corrosion behavior of as-cast ADC12 alloy with rare earth Yb addition and hot extrusion...: The effects of rare earth ytterbium (Yb) addition and hot extrusion on the microstructure and corrosion behavior of as-cast ADC12 were studied by optical microscopy (OM), scanning electron microscopy......
