金属学报  1980, Vol. 16 Issue (1): 73-136

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Mg-5%Zn合金时效过程的X射线研究

许顺生;苏千武

中国科学院上海冶金研究所;中国科学院上海冶金研究所

AN X-RAY INVESTIGATION OF AGE-HARDENING PROCESS OF A Mg-5wt%Zn ALLOY

Xu Shunsheng (Hsu Shun-sheng);Su Qianwu Shanghai Institute of Metallurgy; Academia Sinica

许顺生;苏千武. Mg-5%Zn合金时效过程的X射线研究[J]. 金属学报, 1980, 16(1): 73-136.
, . AN X-RAY INVESTIGATION OF AGE-HARDENING PROCESS OF A Mg-5wt%Zn ALLOY[J]. Acta Metall Sin, 1980, 16(1): 73-136.

摘要 参考文献 相关文章 Metrics 全文: PDF(3182 KB)   摘要: 利用硬度测量和X射线衍射分析,研究了Mg-5％Zn合金的时效硬化过程.指出合金在165℃时效过程中出现两个硬度峰,反映合金内发生了相应的结构变化. 对淬火合金的X射线研究表明,Mg基体中出现平行于(0001)和{1010}面的片状Zn原子富集区.在165℃时效初期,过饱和固溶体合金中桥出细微的二维及三维的亚稳定过渡相β′_1及一维杆状过渡相β′_2.β′_2存在时间很短,β′_2继续生核成长.时效100h后,稳定沉淀相β开始析出,并与β′_2共存.在190℃的时效过程中只出现一个硬度峰,相应于合金中同时出现β′_2及β析出相.测定了β′_1和β′_2过渡相的结构参数及其与母相的取向关系. β′_2的热稳定性相当高,能在250℃长时间存在,说明Mn-Zn系统的时效合金有可能在较高温度下使用. Abstract：The age-hardening processes of a Mg-5wt%Zn alloy have been studied bymeans of hardness measurement and X-ray diffraction analysis. On aging of thisalloy at 165℃, two hardness peaks with corresponding structural changes in thealloy were noticed. X-ray investigation of this alloy in quenched state revealedthat plate-like zinc clusters parallel to (0001) and {1010} planes of the magne-sium matrix were formed. At the initial stage of 165℃ aging, two-and three-dimensional metastable transition phase β'_1 particles and one-dimensional transitionphase β'_2 rods were precipitated out from the super-saturated solid solution. β'_1 existedonly for very short periods, while B'_2 still grew after aging for a total period of100h. when an equilibrium phase β began to precipitate out. During aging at190℃, only one hardness peak appeared, corresponding to the concurrent pre-cipitation of β'_2 and β phases. The structural parameters of β'_1 and β'_2 and theirorientational relationships with the matrix have en determined. The thermal stability of β'_2 was found to be rather high at 250℃, implyingthe probable applicability of the aged Mg-Zn alloys at higher temperatures. 收稿日期: 1980-01-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 许顺生 苏千武 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1980/V16/I1/73 [1] Hardy H.K. and Heal, T.J., Progress in Metals Physics, Vol. 5, Pergamon, 1954, p. 143． [2] 许顺生,金属X射线学,上海科学技术出版社,1962年,p.447． [3] Kelly, A. and Nicholson, R.B., Progress in Material Science, Vol. 10, Pergamon, 1963, p. 149． [4] Nabarro, F.R.N., The Physics of Metals, Vol. 2, Cambridge University Press, 1975, p. 152． [5] Yotaro Murakami, Osamu Kawano and Hideaki Tamura, Mem. Fac. Eng. Kyoto Univ., 24(1962) , No. 1, 93． [6] Sturkey, L. and Clark. J.B., J.Inst. Metals. 88 (1959-60) , 177． [7] Clark, J.B., Acta Met, 13(1965) ,1281． [8] 美马源次郎,田中靖三,日本金属学会志,33(1969) ,796． [9] 美马源次郎,田中靖三,日本金属学会志,35(1971) ,345． [10] 高桥恒夫,小岛阳,鹰西清,轻金属,23(1973) ,376． [11] 长岛晋一,日本金属学会志,23(1959) ,381． [12] Von Henes, S. and Gerold, V., Z. Metallk., 53(1962) , 743． [13] 徐景阳,许顺生,金属学报,8(1965) ,475． [14] Geisler, A.H. and Hill, J.K., Acta Cryst., 1 (1948) , 238． [15] #12 [16] 胡素辉,苏千武,许顺生,金属学报,8(1965) ,475． [17] Nabarro, F.R.N., Proc. Phys. Soc., 52 (1940) , 90; Nabarro. F.R.N., Proc. Roy. Soc., A175 (1940) , 519． [18] 苏千武,许顺生,物理学报,29(1980) ,000． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed