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金属学报  1996, Vol. 32 Issue (2): 202-206    
  论文 本期目录 | 过刊浏览 |
非晶态Fe_(79)B_(16)Si_5合金退火脆化机制研究
车晓舟;孙宝德;胡赓祥;曹兴国;戴礼智
上海交通大学;洛阳工学院;冶金工业部钢铁研究总院
MECHANISM OF ANNEALING EMBRITTLEMENT OF AMORPHOUS Fe_(79)B_(16)Si_5 ALLOY
CHE Xiaozhou; SUN Baode; HU Gengxiang(Shanghai Jiaotong University; Shanghai 200030); CAO Xingguo(Luoyang Institute of Technology; Luoyang 471039); DAI Lizhi(Central Iron & Steel Research Institute; Ministry of Metallurgical Industry;Beijing 100081)(Manuscript received 1995-05-30)
引用本文:

车晓舟;孙宝德;胡赓祥;曹兴国;戴礼智. 非晶态Fe_(79)B_(16)Si_5合金退火脆化机制研究[J]. 金属学报, 1996, 32(2): 202-206.
, , , , . MECHANISM OF ANNEALING EMBRITTLEMENT OF AMORPHOUS Fe_(79)B_(16)Si_5 ALLOY[J]. Acta Metall Sin, 1996, 32(2): 202-206.

全文: PDF(412 KB)  
摘要: 通过测定非晶态Fe_(79)B_(16)Si_5合金在退火脆化、结构弛豫和晶化时的激活能,分析了合金的延-脆转化机制。非晶态Fe_(79)B_(16)Si_5合金对应于延-脆转化临界点的激活能为125kJ/mol,与反映结构弛豫过程中原子间交互作用变化的激活能(85kJ/mol)相近,而远低于预晶化相α-Fe析出激活能(374-399kJ/mol),说明结构弛豫过程中非晶结构的短程有序化是导致脆化的主要原因之一,合金的脆化与晶化无关。
关键词 非晶态合金退火脆化结构弛豫晶化激活能    
Abstract:Activation energies for the ductile-brittle transition, structural relaxation and crystallization of the amorphous Fe_(79)B_(16)Si_5 alloy have been determined. The relations of annealing embrittlement with structural relaxation and crystallization have been investigated.The activation energy for ductile-brittle transition is 125 kJ/ mol, which is close to the activation energy for the change of atomic interactions during structural relaxation (85kJ/ mol), but is much lower than that for the formation of α-Fe during the early stage of crystallization (374-399 kJ/ mol). It is apparent that the annealing embrittlement of amorphous Fe_(79)B_(16)Si_5 alloy is related to the atomic short range ordering during structural relaxation. And there is no relationship between the embrittlement behaviour and crystallization.(Correspondent: CHE Xiaozhou, post doctoral, Department of Materials Science, Shanghai Jiaotong University, Shanghai 200030)
Key words amorphous alloy    annealing embrittlement    structural relaxation    crystallization    activation energy
收稿日期: 1996-02-18     
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