晶体材料内部衍射用基准零应力铝粉标准试样的制备及校准  

Preparation and calibration of reference zero stress aluminum powder standard sample for internal diffraction of crystal materials

作　　者：吴林阳 计鹏飞 杨竞涵 张津 郑林[2] 窦世涛 WU Linyang;JI Pengfei;YANG Jinghan;ZHANG Jin;ZHENG Lin;DOU Shitao(Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China;Southwest Institute of Technology and Engineering,Chongqing 400039,China)

机构地区：[1]北京科技大学新材料技术研究院,北京100083 [2]西南技术工程研究所,重庆400039

出　　处：《理化检验（物理分册）》2024年第9期24-29,共6页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：采用黏接铝粉的方式制备了一种晶体材料内部衍射用基准零应力铝粉标准试样,采用短波长特征X射线衍射仪对试样的均匀性、各向同性、内部残余应力进行测试,采用不同残余应力测试方法和不同计算方法对试样表面及内部应力进行验证。结果表明:该试样不同部位、不同方向的衍射强度偏差都小于10%,具备均匀性和各向同性,表面和内部残余应力也都为-25~25MPa。A reference zero stress aluminum powder standard sample for internal diffraction of crystal materials was prepared by bonding aluminum powder.The uniformity,isotropy,and internal residual stress of the sample were tested using a short wavelength characteristic X-ray diffractometer.Different residual stress testing methods and calculation methods were used to verify the surface and internal stress of the sample.The results show that the diffraction intensity deviation in different parts and directions of the sample was less than 10%,indicating uniformity and isotropy.The residual stresses on the surface and inside were also within-25~25 MPa.

关 键 词：残余应力 零应力试样 铝粉 各向同性 衍射角 

分 类 号：TB301[一般工业技术—材料科学与工程] TG115.2[金属学及工艺—物理冶金]