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at Stage III can thus be attributed to the solute-depletion softening exceeding the age hardening effect of the T1 precursors. Increasing creep ageing time to Stage IV, further growth of T1 precipitates...-Li alloy during creep age forming ZHOU Chang(周畅)1, ZHAN Li-hua(湛利华)1, 2, 3, LI He(李贺)1,ZHAO Xing(赵兴)1, 2, 3, HUANG Ming-hui(黄明辉)1, 2, 3 1. College of Mechanical and Electrical Engineering, Central......
Trans. Nonferrous Met. Soc. China 30(2020) 2491-2501 Age softening phenomenon and microscopic mechanism of Li-B alloy Hai-feng HUANG, Zhi-Jian LIU, Chao-ping LIANG, Li-bao CHEN State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China Received 14 March 2020; accepted 4 June 2020 Abstract: The age softening phenomenon of the Li-B alloy was investigated by a series......
Dynamic softening behaviors of 7075 aluminum alloy QUAN Guo-zheng(权国政)1, LIU Ke-wei(刘克威)1, ZHOU Jie(周 杰)1, CHEN Bin(陈 斌)2 1. School of Material Science and Engineering, Chongqing University...; Abstract: The dynamic softening behaviors during......
September 2009; accepted 30 January 2010 Abstract: The Mg-6.5Gd-1.3Nd-0.7Y-0.3Zn alloy ingot and sheet were prepared by casting and hot extrusion techniques, and the microstructure, age hardening... size is refined after hot extrusion, and the Mg5RE and Mg24RE5 compounds are broken during the extrusion process. The extruded alloy exhibits remarkable age hardening response and excellent mechanical......
temper softening. The hardness of the surface age hardening alloy is increased from 500 HV 0.2 to 750 HV 0.2 after solution treatment followed by ageing for 5 min at 540 ℃, increased to 1 200 HV 0.2... Fig.6 Curve against temper softening for surface age-hardening alloy of Fe-Co-W-Mo 左右. 随着回火温度提高, 硬度降低. 从曲线斜率可知, 650~700 ℃该合金的硬度下降率大大高于600~650 ℃的下降率. 尽管如此, 700 ℃回火2 h, 该表面合金的表面硬度仍大于720 HV0.2. 这说......
discussed by explanation of microstructural evolution due to the competition of precipitation hardening, strain hardening and work softening processes. Key words: 6061 aluminum alloy; age hardening... of aluminum alloys [2]. When cold working is combined with age treatment, two main microstructural processes are competing with each other. Work softening due to dislocation annihilation during age......
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J. Cent. South Univ. Technol. (2010) 17: 666-673 DOI: 10.1007/s11771-010-0538-9 Effect of strain hardening and strain softening on welding distortion and residual stress of A7N01-T4 aluminum alloy...; Abstract: The effect of strain hardening and strain softening behavior of flow stress......
J. Cent. South Univ. Technol. (2009) 16: 0653-0657 DOI: 10.1007/s11771-009-0108-1 Estimation of compaction grouting pressure in strain softening soils YANG Xiao-li(杨小礼), ZOU Jin-feng(邹金锋..., according to the softening elastic-plastic model based on the conventional triaxial compression tests to simulate the strain softening soils. The small strain in the elastic zone and large stain......