激光快速熔凝Fe基、Ni基合金的细化形态

材料研究学报, 1989, 3(3): 199-204.

激光快速熔凝Fe基、Ni基合金的细化形态

中国科学院金属研究所

关键词：激光熔凝 , epitaxial growth , dendritic refine , sub-grainL , heterogeneously nucleated temperature gradient , null

A FINING MECHANISM OF THE LASER SOLIDIFIED MICROSTRUCTURE FOR Fe-AND Ni-BASE ALLOYS

JIANG Ming JIANG Xiaoping HUANG Yianguo SUN Xiaofeng GE Yunlong HU Zhuangqi (Institute of Metal Research , Academia sinica) , null , null , null , null

Keywords： laserglaze , 外延生长 , 枝晶细化 , 亚晶粒 , 非自发形核 , 温度梯度

采用脉冲激光对纯Fe、纯Ni、20钢和Ni 基合金进行了快速熔凝处理。结果表明,在纯Fe和纯Ni 熔凝区内,生成了一种外延生长的晶粒组织;在20钢和Ni 基合金熔凝区内,生成了外延生长晶粒和极细的枝晶组织。在金属与合金的熔区中均形成了精细的的亚晶粒。激光快速熔凝大大地细化了校晶和亚晶,却没有得到明显细化的晶粒。

Laser rapid solidification treatment on pure Fe,20 steel andNi-base alloy is performed by means of pulse laser.The results show thatsome epitaxially growing grains are formed in the melted zones of pure Fe andNi.The epitaxially growing grains and fine den

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材料期刊网

激光快速熔凝Fe基、Ni基合金的细化形态

A FINING MECHANISM OF THE LASER SOLIDIFIED MICROSTRUCTURE FOR Fe-AND Ni-BASE ALLOYS

参考文献