【摘要】 用透射电镜鉴定了18Ni马氏体时效钢的主要强化相为Ni₃Mo与Ni₃Ti。指出用选区电子衍射谱来鉴别它们所应选择的特定基体晶带轴指数。从析出相的形状效应分析了产生多边形衍射斑的原因。更多还原

【Abstract】 The precipitates responsible for strengthening in a 18Ni-Co-Mo-Ti maragingsteel are Ni₃Ti and Ni₃Mo as identified by TEM. It should be pointed out thatusing selected-area diffraction patterns, the two precipitates were discerned sepa-rately only when certain specific orientations of the matrix crystal were chosen.The polygonal shape of the diffraction spots has been discussed in light of theshape factor effects of the Ni₃Mo particles.更多还原