摘要
Fe74Cr2Mo2Sn2P10Si4B4C2是一种发现不久的块体非晶合金。用旋淬法制备了该合金的非晶带材,DSC测得玻璃转化温度Tg是750K,晶化温度Tx1是786K,Tx2是805K。将带材样品分别在不同保温温度和保温时间下退火,用XRD和DSC研究晶化时的相转变。Fe74Cr2Mo2Sn2P10Si4B4C2非晶合金的晶化过程为Am→Am+-αFe→α-Fe+Fe3P+Cr23C6+Fe3C+Fe3B+Fe2B,晶化的两个阶段分别对应淬态样品DSC曲线上的两个放热峰。测试了不同退火条件下样品的显微维氏硬度,结果表明晶化使硬度升高,二次晶化时最高,达到HV1278。
Recently, a new bulk amorphous system Fe74Cr2Mo2Sn2P10Si484C2 has been reported. A rapidly solidified ribbon was prepared by melt spinning in this paper. The glass transition temperature Tg is 750K and the crystallization temperature are 786K （ Tx1 ） and 805K （ Tx2 ）. The phase transition of the amorphous alloy annealed at different temperature and time was studied by X-ray diffraction（XRD） and differential scanning calorimetry （DSC）. The crystallization of Fe74Cr2Mo2Sn2P10Si484C2 proceeds by the process Am（amorphous state）→Am→Am＋α-Fe-α-Fe＋Fe3P＋Cr23C6＋Fe3C＋Fe3B＋Fe2B, and two stage corresponds to two exothermic peaks in the DSC curve of the as-quenched sample. The Vickers microhardness of the samples was studied and showed increases during the crystallization. The highest microhardness is HV1278 during the second-stage of the crystallization.
出处
《金属功能材料》
CAS
2005年第4期1-3,共3页
Metallic Functional Materials
