利用透射电镜和高分辨电镜对9Ni钢合金显微结构进行了观察,发现在几种不同热处理条件下,样品中的同一马氏体束内二相邻马氏体片的[110]_M方向间存在约5.3°的角度差.本文提出了一个类Bain转变关系:[101]_A∥[111]_M,(010)_A∥(110)_M,可以合理解释这一现象.
The microstructure of 9Ni steel was investigated by means of TEM and HREM. In specimans heat treated under different conditions, it was discovered that there was an angle difference of about 5.3 degree between [110]_M directions of adjacent two lathes in a martensite bunch. This paper provides a transformation model of similar Bain relation:(010)_A ∥(110)_M, [101],∥[111]_M, and it can rationally explain the phenomenon above mentioned.Correspondent. MENG Xiangmin, Laboratory of Atomic Imaging of Solids, Institute of Metal Research,Chinese Academy of Sciences, Shenyang 110015
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