摘要
采用X射线衍射仪、扫描电子显微镜及能谱仪等研究了合金元素对铝锌合金组织的影响。结果表明,锌铝合金中含有Si、Cu、Fe等元素与Al或者Zn易生成金属间化合物。锌铝合金呈现枝状晶形貌,合金中存在大量不规则熔池组织。合金中的杂质元素及氧化物均存在于熔池组织中,这些熔池组织在高倍观察下可见为分散性的微孔。在受到外力时,这些缩孔将成为应力集中点,大量微小缩孔是合金在外力下发生断裂的主要原因。
The effect of alloy elements on the microstructure of Al-Zn alloy was investigated by using X-ray diffractometer, scanning electron microscope(SEM) and energy spectrometer. The results show that the elements such as Si,Cu, Fe are easy to produce intermetallic compounds with Al or Zn in Al-Zn alloy. Al-Zn alloy exhibits dendritic morphology and a large number of irregular molten pool structure exists in the alloy. The impurity elements and oxides in the alloy are existed in the molten pool, which are visible dispersed micro-perforations under high times observation. When the alloy is subjected to external force, these shrinkage becomes the stress concentration point, and a large number of tiny shrinkage is the main reason for the fracture of the alloy under external force.
作者
高丽娜
邓斌
曹伟产
GAO Li'na;DENG Bin;CAO Weichan(Xi'an International University,Xian 710077,China;No.12 Research Institute of CSIC,Xingping 713102;Xi'an XD Switchgear Electric Co.,Ltd.,Xi'an 710077,China)
出处
《热加工工艺》
CSCD
北大核心
2018年第15期250-252,255,共4页
Hot Working Technology
基金
西安市2017年度社会科学规划基金项目(17IN09)
关键词
锌铝合金
断裂
失效
阀片
zinc-aluminum alloy
fracture
failure
valve piece