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, which caused lattice distortion and resulted in a solid solution strengthening effect. The results of the present study showed that the solid solution strengthening effect was insufficient to compensate for the weakening of the secondary phases strengthening effect. As a result, the yield strength of the solution-treated alloy decreased dramatically compared with the as-cast alloy. Besides, due......
strengthening with aging strengthening. And the optimal processing parameters of LTTMT for TC4 alloy are: solution treatment at 900 ℃ for 15 min, pre- deformation in the range of 600-700 ℃ with a reduction... that the strength of TC4 alloy can be improved obviously by LTTMT processing, which combines strain strengthening with aging strengthening. The effect of LTTMT on the alloy depends on the microstructure......
Attack of Limestone Cement-based Material Exposed to Magnesium Sulfate Solution at Low Temperature张风臣,WU Shengxing,FANG Yonghao,ZHOU Jikai,LI ZhonghuaCollege of Mechanics and Materials, Institute...% limestone powder by mass at 5 ± 2 ℃ is investigated. The compressive strength and fl exural strength of mortar specimen immersed in MgSO 4 solution increase firstly, then decrease rapidly......
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Trans. Nonferrous Met. Soc. China 23(2013) 2537-2542 Effects of solution treatment on microstructure and mechanical properties of Al-9.0Zn-2.8Mg-2.5Cu-0.12Zr-0.03Sc alloy Gao-song WANG, Zhi-hao ZHAO... March 2013 Abstract: Effects of additions minor contents of 0.03% Sc and 0.12% Zr and solution treatment on microstructure and mechanical properties of Al-9.0Zn-2.8Mg-2.5Cu alloy were studied......
of elongation. With large solid solubility in magnesium, elements like Al can improve the strength of Mg-Li alloys based on the solid-solution strengthening effects. As a result, in recent decades, Al was one...; precipitation strengthening 1 Introduction Magnesium alloys, with low density and high specific strength, have been widely used in automobile, aerospace and military industries [1-3]. However......
℃固溶1.5 h后的显微组织 Fig. 1 Microstructure of Cu-Cr-Zr alloy after solution treatment at 950 ℃ for 1.5 h 图2所示为固溶处理后的Cu-0.36Cr-0.03Zr合金,经不同温度时效处理后,显微硬度与时效时间的关系曲线.从图2中可以看出,在时效初期,合金显微硬度迅速提高,且温度越高增加幅度越大...导Cu-0.1Ag-0.11Cr合金的强化机制[J]. 中国有色金属学报, 2004, 14(7): 1144-1148. JIA Shu-guo, LIU Ping, TIAN Bao-hong, ZHENG Mao-sheng, ZHOU Gen-shu, LOU Hua-fen. Strengthening mechanism in high-strength and high......
diffusion. Key words: copper alloys; alumina dispersion strengthened alloy; high temperature mechanical behavior; creep behavior; fracture; strengthening mechanism 1 Introduction Alumina dispersion... strengthening was not taken into consideration. GUO et al [9,10] studied the cold rolling effects on properties, microstructures, tensile fracture and found that the mechanical properties......
experiment, optical microscope observation and Vickers hardness. The results show that the yield strength model can be established by integrating solid solution strengthening (σss), grain size...; (6) 式中:q值为2.各个合金的强化系数ks,i如表2所列[21]. 表2 各强化元素在镍中的强化系数ks,i值[21] Table 2 Strengthening coefficient ks,i value of each......