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″ phase in the early stage of subsequent artificial aging and consequently can promote the aging hardening. References [1] EDWARDS G A, STILLER K, DUNLOP G L, COUPER M J. The precipitation...-Si alloys [J]. Scripta Mater, 1997, 36(1): 89-93. [3] GUPA A K, LLOYD D J, COURT S A. Precipitation hardening in Al-Mg-Si alloys with and without excess Si [J]. Mater Sci Eng A, 2001, 316(1-2......
the back hardening response (BHR) of Al-Mg-Si alloys [7-10]. Pre-straining has been reported to have a substantial effect on the precipitation behavior of Al-Mg-Si alloys [11-15]. The dislocations... for GP zones and accelerate the precipitation of β″ phase, which is the main precipitates contributing to the peak hardness [22]. However, the dislocations also lead to deformation hardening, thus......
. [5] Wilson R, Bettles C J, Muddle B C, et al. Precipitation hardening in Mg-3%Nd(-Zn) casting alloys[J]. Materials Science Forum, 2003, 419/422: 267?272. [6] YAN Yun-qi, ZHANG Tian-jie, DENG Jun, et... Mg-2Nd alloys, the direct aging(T5) has the combined effect of work hardening and age hardening. The tensile strength of as rolled sample is raised to 276.4 MPa and the elongation is enhanced by 64......
Trans. Nonferrous Met. Soc. China 31(2021) 1205-1216 In situ thermomechanical processing to avoid grain boundary precipitation and strength-ductility loss of age hardening alloys Yong-hao ZHAO Nano... Abstract: To avoid grain boundary (GB) precipitation during aging, a new strategy of in situ thermomechanical processing for age hardening alloys was proposed. Specifically, high-density nanoscale......
. Combinative hardening effects of precipitation in a commercial aged Al–Cu–Li–X alloy [J]. Materials Science and Engineering A, 2013, 588: 59–64. [19] LI Hong-ying, HUANG Da-sheng, KANG Wei, LIU Jiao-jiao, OU... J. Cent. South Univ. (2018) 25: 1340-1349 DOI: https://doi.org/10.1007/s11771-018-3830-8 Effect of ageing temperature on precipitation of Al–Cu–Li–Mn–Zr alloy DENG Yan-jun(邓燕君), HUANG Guang-jie(黄光杰......
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......
]. Cambridge University Press, 2005: 70-79. [8] CHENG L M, POOLE W J, EMBURY J D, LLOYD D J. The influence of precipitation on the work-hardening behavior of the aluminum alloys AA6111 and AA7030[J...于镁合金的应变硬化理论模型. 关键词:镁合金；应变硬化行为；位错滑移；孪生 中图分类号:TG146.2 文献标志码:A Research progress of strain hardening behavior at room temperature in wrought magnesium alloys SONG Bo1, 2, XIN......
or no precipitation hardening response during isothermal or isochronal ageing of supersaturated solid[8]. Accordingly, it is possible that binary Mg-Ho alloys containing low Ho show little or no precipitation... out the grains after solution. The increase of PHV is mainly attributed to precipitation hardening. Secondly, the solubility of Ho in α-Mg matrix is reduced relatively with increasing Nd content......
; precipitation hardening; mechanical properties 1 Introduction Precipitation hardening magnesium (Mg) alloys containing rare earth (RE) elements are attractive in aerospace and racing automotive industries... C, DONNADIEU P, PERRARD F, DESCHAMPS A, TASSIN C, PISCH A. Hardening precipitation inaMg-4Y-3RE alloy [J]. Acta Mater, 2003, 51: 5335-5348. [9] NISHIJIMA M, HIRAGA K, YAMASAKI M, KAWAMURA Y......
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