激光点火功率对激光诱导自蔓延反应合成非晶基复合材料组织性能的影响  

Influence of Laser Ignition Power on Microstructure and Property of Amorphous - based Composite Fabricated by Laser - induced Self-propagating Reaction Synthesis

作　　者：王存山[1] 夏元良[1] 李刚[1] 高林辉[1] 王彦芳[1] 董闯[1] 

机构地区：[1]大连理工大学三束材料改性国家重点实验室,大连116023

出　　处：《应用激光》2002年第2期137-139,144,共4页Applied Laser

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.

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 

分 类 号：TG13[一般工业技术—材料科学与工程] TN249[金属学及工艺—合金]