摘要
为了研究铜磷钎料组织缺陷对钎料特性及钎焊质量的影响,丰富影响钎焊质量的材料性因素评估手段,通过控制加工工艺参数,制备了宏观偏析、熔体杂质、组织不良三类缺陷钎料。采用光学显微镜、差示扫描量热分析、硬度测试、高频焊后组织观察等手段,研究了不同缺陷程度对钎料特性的影响。结果表明:相同缺陷类型下,液相线温度、结晶温度区间随缺陷程度的降低而降低;挤压态偏析富铜位置的显微硬度值低于正常位置;组织颗粒大小对气孔产生无影响,夹渣、偏析引起较大的气孔问题,且气孔随钎料试样缺陷程度的降低而减少。
The three types of Cu-P based brazing alloys with macrosegregation,fusion impurities or imperfect microstructures were prepared by controlling processing parameters,to research the influence of microstructure defects of on the characters of solders and welding quality,research influence of microstructure defects of Cu-P based brazing alloys to characters and enrich the assessment methods of material factors affecting welding quality.Optical microscope(OM),different scanning calorimetry(DSC),microhardness tests were used to study the influence of different defect levels on properties of brazing filler metals.The liquidus temperature and the crystallization temperature range of samples reduce with the reduction of defect level under the same defect type.The microhardness of copper-rich location is lower than normal location in macrosegregation samples of extrusion condition.The size of the microstructure has no effect on the porosity,but slag inclusion and segregation cause the bigger porosity,and the porosity decreases with the decrease of the defect degree of the solder sample.
作者
倪雪辉
刘畅
张行
杨芝明
NI Xuehui;LIU Chang;ZHANG Hang;YANG Zhiming(Gree Electric Appliances,Inc.of Zhuhai,Zhuhai 519070)
出处
《家电科技》
2020年第4期40-43,共4页
Journal of Appliance Science & Technology
关键词
铜磷钎料
组织缺陷
宏观偏析
熔体杂质
组织不良
熔化温度
硬度
焊接气孔/夹渣
Cu-P based brazing alloy
Microstructure defects
Macrosegregation
Fusion impurity
Imperfect microstrueture
Fusing temperature
Hardness
Weld porosity/slag inclusion
作者简介
倪雪辉,nixuehui110@163.com
