摘要
注意到构成Zr基大块非晶合金体系的主要组元之间具有很大的负混合焓,因而能够发生很强的放热反应。利用这一特点,我们首次设计了激光诱导自蔓延反应合成大块非晶合金的工艺。针对Zr-Al-Ni-Cu合金体系初步研究结果表明,合成产物主要是由非晶、Zr3Al2及Zr2Cu型金属间化合物所构成。增加激光点火功率,合成产物中非晶比例增加,而硬度降低。
Noticing that strong exothermic reaction due to large negative enthalpy of mixing can occur among major components of bulk metallic glass forming alloy systems, we developed for the first time a new technique for fabricating amorphous-based composite material using Laser- induced Self propagating Reaction Synthesis (LSRS). The LSRS for Zr- Al - Ni - Cu alloy system shows that the product mainly consists of amorphous, Zr3A12 and Zr2Cu phases. With the increasing of laser ignition power, the amount of amorphous phase in the products increases, while microhardness decrease.
出处
《应用激光》
CSCD
北大核心
2002年第2期137-139,144,共4页
Applied Laser
关键词
激光诱导自蔓延反应
非晶合金
复合材料
铬基合金
激光点火功率
Laser- induced Self - propagating reaction, bulk amorphous alloy, composite material, Zr- based alloys
