摘要
研究了Fe74Al4Ga2P12B4Si4和Fe73Al4Cu1Ga2P12B4Si4合金在500～550℃的等温晶化行为,并分析了Cu对Fe74Al4Ga2P12B4Si4合金晶化行为的影响。采用XRD和DSC分析晶化相组成。结果表明,Cu降低合金的晶化温度,使得DSC图像上的玻璃转变温度消失,在铸态组织中出现淬态核。同时Cu的富集为α-Fe的形核提供大量的形核中心,阻止晶粒的长大,使合金纳米化,改变了合金的晶化方式和最终晶化产物。
Nanocrystallization behavior and properties of the amorphous alloys Fe74Al4Ga2P12B4Si4 and Fe73A14Cu1Ga2 P12B4Si4 annealed isothermally at 500～550℃ for 30 min were investigated. DSC and XRD were used to investigate the effect of Cu on crystallization of amorphous alloy Fe74A14Ga2P12B4Si4 .The resalts show that Cu makes the crystallization temperature reduce and the glass transition temperature disappear, and quenched nucleus appear in the structure as-cast. The bcc structure ot-Fe （Si） solid solution is precipitated in the amorphous matrix.It provides abundant nucleating center, stops crystal grain grow and changes crystallization mode and final crystallization product.
出处
《热加工工艺》
CSCD
北大核心
2006年第8期15-17,共3页
Hot Working Technology
基金
江苏省教育厅高校科学研究项目(03KJD430067)
关键词
铁基非晶合金
晶化
晶化温度
晶化产物
Fe-based amorphous alloys
crystallization
crystallization temperature
crystallization product
