摘要
采用机械合金化方法制备了x=1和x=0.5两种Al0.25FeNiCoCrYx高熵合金粉末,通过X射线衍射仪和扫描电子显微镜得到了两种Y元素含量的高熵合金粉末在球磨及烧结后的显微组织。XRD图谱表明,当x=0.5时,高熵合金粉末球磨后的衍射峰有宽化趋势,而球磨后中原本消失的衍射峰在烧结后重新出现,且FCC结构的衍射峰比较大;Y元素含量所引起的球磨特性变化不大,但当Y元素含量为1%时,烧结后的高熵合金粉末的BCC结构的晶格衍射峰会消失。从SEM图片可以看出,球磨后的颗粒有集结成团的现象,而烧结后的粉末并没有出现这种集结成团的现象,且颗粒分布更加均匀,粒度与球磨的来说相对较大。
Two kinds of Al0.25FeNiCoCrYx high-entropy alloy powders x=1 and x=0.5 are prepared by mechanical alloying.The microstructure of two high entropy alloy powders with Y content after ball milling and sintering are obtained by X-ray diffractometer and scanning electron microscope.The XRD patterns shows that the diffraction peaks of the high entropy alloy powders after ball milling appears a widening trend when x=0.5.After ball milling,the original disappears diffraction peaks appear again after sintering,and the diffraction peaks of FCC structure are relatively large.The ball milling properties caused by the content of Y element do not change much,but when the content of Y element is 1 %,the entropy is high after sintering.The lattice diffraction summit of BCC structure of alloy powder disappears.It can be seen from the SEM images that the particles after ball milling are clustered into clusters,but the sintered powders do not show such agglomeration phenomenon,and the particle distribution is more uniform,and the particle size is relatively larger than that of ball milling.
作者
赵昌兴
赵昌方
尹付成
Zhao Changxing;Zhao Changfang;Yin Fucheng(School of Materials Science and Engineering,Xiangtan University,Xiangtan 411105;School of Mechanical Engineering,Nanjing Universityof Science and Technology,Nanjing 210094,China)
出处
《广东化工》
CAS
2019年第17期10-12,共3页
Guangdong Chemical Industry
基金
湘潭大学国家级大学生创新创业项目(201810530018)
江苏省研究生科研与实践创新计划项目(KYCX19_0327)
关键词
高熵合金粉末
球磨特性
烧结特性
衍射峰
元素含量
粒度
high entropy alloy powder
ball millingproperty
sintering characteristic
diffraction peak
element content
particle size
