Application of Synchrotron X-Ray Imaging and Diffraction in Additive Manufacturing:A Review

• 作者: Naying An Sansan Shuai Tao Hu Chaoyue Chen Jiang Wang Zhongming Ren
• 来源期刊: 金属学报（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: Special Issue: Application of Synchrotron Radiation in Materials Research
• 页码范围: 25-48
• 页数: 24页
• 语种: 英文

摘要

Additive manufacturing (AM) is a rapid prototyping technology based on the idea of discrete accumulation which offers an advantage of economically fabricating a component with complex geometries in a rapid design-to-manufacture cycle.However,various internal defects,such as balling,cracks,residual stress and porosity,are inevitably occurred during AM due to the complexity of laser/electron beam-powder interaction,rapid melting and solidification process,and microstructure evolution.The existence of porosity defects can potentially deteriorate the mechanical properties of selective laser melting(SLM) components,such as material stiffness,hardness,tensile strength,and fatigue resistance performance.Synchrotron X-ray imaging and diffraction are important non-destructive means to elaborately characterize the internal defect charac-teristics and mechanical properties of AM parts.This paper presents a review on the application of synchrotron X-ray in identifying and verifying the quality and requirement of AM parts.Defects,microstructures and mechanical properties of printed components characterized by synchrotron X-ray imaging and diffraction are summarized in this review.Subsequently,this paper also elaborates on the online characterization of the evolution of the microstructure during AM using synchrotron X-ray imaging,and introduces the method for measuring AM stress by X-ray diffraction (XRD).Finally,the future applica-tion of synchrotron X-ray characterization in the AM is prospected.