压力对非晶(Fe_(0.99)Mo_(0.01))_(78)Si_9B_(13)晶化相α-Fe(Mo,Si)晶粒尺寸的影响

金属学报, 1996, 32(8): 867-871.

压力对非晶(Fe_(0.99)Mo_(0.01))_(78)Si_9B_(13)晶化相α-Fe(Mo,Si)晶粒尺寸的影响

姚斌 , 华中 , 闵春宗 , 王爱民 , 刘浩哲 , 丁炳哲 , 胡壮麒

中国科学院金属研究所快速凝固非平衡合金国家重点实验室

基金项目: 国家自然科学基金；吉林省教委资助

关键词：静高压 , crystallization , nanocrystal , Fe-Mo-Si-B , amorphous alloy

EFFECT OF PRESSURE ON GRAIN SIZE OF CRYSTALLIZED PHASE α-Fe(Mo,Si)IN AMORPHOUS (Fe_(0.99)Mo_(0.01))_(78)Si_9B_(13)ALLOYS

YAO Bin , HUA Zhong , MIN Chunzong , WANG Aimin , LIU Haozhe , DING Bingzhe , HU Zhuangqi 1) Sipins Normal Collexe

Keywords： : high pressure , 晶化 , 纳米晶 , Ｆｅ－Ｍｏ－Ｓｉ－Ｂ , 非晶合金

在压力为３－６ＧＰａ和温度为７２３－９３３Ｋ范围内，对非晶（Ｆｅ_（０．９９）Ｍｏ_（０．０１））_（７８）Ｓｉ_９Ｂ_（１３）合金等温晶化形成的纳米α－Ｆｅ（Ｍｏ，Ｓｉ）晶粒尺寸随温度和压力的变化进行了研究。发现其晶粒尺寸随压力变化主要取决于压力对成核速率的影响，其根本原因是压力对熔点的作用；而压力亦影响生长速率，但对最小晶粒尺寸的形成温度和临界压力的影响可以忽略．

Effects of pressure and temperature on grain size of nanocrystalline α-Fe(Mo,Si) produced by annealing amorphous (Fe_(0.99)Mo_(0.01)_(78)Si_9B_(13) alloys in temperature range from 723 to 933 K under pressures range of 3 to 6 GPa were studied. It is found that the effect of pressure on α-Fe(Mo,Si) grain size results mainly from nucleation rate, and its basic cause is the effect on melting point. Yet the effect of pressure, decreasing growth rate, on the fomiation temperature and critical pressure of smallest grain size of α-Fe(Mo,Si) can be negligible. Correspondent: (YAO Bin, associate professor, Physics Department, Siping Normal College,Siping 136000)

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