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Synthesis of high-purity Ti2AlN ceramic by hot pressing YAN Ming(严 明)1, CHEN Yan-lin(陈艳林)1, MEI Bing-chu(梅炳初)2, ZHU Jiao-qun(朱教群)2 1. College of Chemistry and Environmental Engineering, Hubei...; Abstract: High-purity Ti2AlN ceramic was prepared at 1300 ℃ by hot pressing(HP) of Ti/Al/TiN powders in stoichiometric proportion. The sintered product was characterized using X-ray......
of the process parameters on microstructure of the semi-solid Al-4Cu-Mg alloy in the isothermal compression process[J]. Rare Metal Materials and Engineering, 2005, 34(5): 833?836. [9] 邹茂华, 刘昌明, 左宏志... by electromagnetic stirring method was poured into a special mold and a series of the spiral samples were obtained by semi-solid squeeze casting process. The characteristic parameters of the primary......
; Abstract: The hot compression testing of hot isostatically pressed(HIPed) spray formed(SF) nickel-base superalloy... forming; nickel-base superalloy; hot compression; processing map; recrystallization  ......
understanding of the relationship between the extrusion conditions and the thermomechanical response of a magnesium alloy to hot deformation holds the key to the process optimization. For a given die... compression tests[15] were used to describe the thermomechanical behaviour of the billet material during the hot extrusion. A shear friction model was applied to describe the interfacial friction......
compression, hot rolling and post-rolling annealing on microstructure and tensile properties of Ti-6Al-4V were analyzed. Hot compression tests were conducted in the temperature range of 800-1 075 °C...; hot rolling; hot compression; heat treatment; globularization 1 Introduction Hot deformation parameters and post-deformation heat treatments are often selected in a way to control......
samples under the hot working conditions of varying temperature and strain rate conducted on isothermal compression heat stimulation machine. Hence, the objective of the present paper is to study the influence of the processing temperature, strain rate and deformation degree on the flow stress behavior and to perform constitutive modeling of the hot working process for Ti26. 2 Experimental......
J. Cent. South Univ. (2017) 24: 17-29 DOI: 10.1007/s11771-017-3404-1 Soft measurement model of ring’s dimensions for vertical hot ring rolling process using neural networks optimized by genetic... Central South University Press and Springer-Verlag Berlin Heidelberg 2017 Abstract: Vertical hot ring rolling (VHRR) process has the characteristics of nonlinearity, time-variation and being......
and Engineering, Chongqing University, Chongqing 400044, China) Abstract: The deformation behavior of AZ31B magnesium alloy as extruded under hot compression conditions was characterized in the temperature range... 300℃ and strain rate of 1s-1 appears with a peak efficiency of power dissipation about 56% occurring. This domain is expected to happen in a hot process, such as hot rolling, hot extrusion and hot......
by compression deformation test of cylindrical specimen at constant temperature and strain rate on Gleeble21500 hot simulator. The strain hardening index n and deformation activation energy Q also were calculated... with the increase of temperature and increases with the increase of strain rate. The optimal temperature of hot working for this alloy is about 450 ℃. Key words: B93 aluminum alloy; hot compression......
Incoloy 800H高温变形流动应力预测模型孙朝阳1,刘金榕1,李瑞1,张清东1(1.北京市北京科技大学机械工程学院)摘 要:采用Gleeble-1500热模拟实验机研究了Incoloy 800H合金在变形温度为1273-1473 K和应变速率为0.01-10 s~(-1)条件下的流动应力行为.采用双曲正弦函数建立了Incoloy 800H高温条件下的流动应力本构方程,以六次多项式考虑了应变量耦合因素对本构关系的影响.研究结果表明,Incoloy 800H在热压缩变形过程中,低应变速率和高应变速率条件下分别......