Abstract In this study, the crystallographic texture variation of electron beam welded dissimilar copper to 304L stainless-steel joints was investigated using Time-of-flight neutron diffraction measurements. The effect of beam oscillation by changing its oscillation diameter on texture orientation variation was evaluated. Neutron diffraction measurements were performed using General Materials Diffractometer beamline at Rutherford Appleton Laboratory neutron radiation source. Phase fractions and variations of crystallographic texture in terms of pole figures and inverse pole figures were obtained. The stronger texture we found in all regions of the joints i.e. heat-affected zone and fusion zone for oscillating beam compared to its non-oscillating counterparts. Also, by increasing the oscillation diameter, from its optimum value, a weaker texture was found, which had a detrimental effect on mechanical properties. Electron-backscatter diffraction texture measurements were also performed to compare and complement the results obtained from neutron texture.

中文翻译：

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电子束焊接异种铜不锈钢接头的中子衍射织构映射

摘要 在这项研究中，使用飞行时间中子衍射测量研究了电子束焊接异种铜与 304L 不锈钢接头的晶体织构变化。通过改变其振荡直径来评估光束振荡对纹理取向变化的影响。中子衍射测量使用通用材料衍射仪光束线在卢瑟福阿普尔顿实验室中子辐射源进行。获得了在极图和反极图方面的晶体结构的相分数和变化。与非振荡梁相比，我们在接头的所有区域（即振荡梁的热影响区和熔合区）发现了更强的纹理。此外，通过增加振荡直径，从其最佳值，发现质地较弱，这对机械性能有不利影响。还进行了电子背散射衍射纹理测量，以比较和补充从中子纹理获得的结果。