Woo Wanchuck, Kim Jongyul, Kim Eun-Young, Choi Shi-Hoon, Em Vyacheslav, Hussey Daniel S
Neutron Science Center, Korea Atomic Energy Research Institute, Daejeon 34057, South Korea.
Department of Printed Electronics Engineering, Sunchon National University, Sunchon 57922, South Korea.
Scr Mater. 2019 Jan;158. doi: 10.1016/j.scriptamat.2018.08.040.
Micrometer to centimeter scale analyses of the crystalline phase volume fractions in a trip-assisted duplex stainless steel were performed under loading using electron backscatter diffraction (EBSD), in situ neutron diffraction, and energy selective neutron imaging (ESNI) methods. In contrast to the localized investigations of EBSD, ESNI provides macroscopic spatial distributions in a volume-averaged manner over the entire specimen with a spatial resolution of about 65 μm. The ESNI shows that the martensite is concentrated on the necking region and estimates its volume fraction of 14% at a strain of 0.2, which is comparable to the neutron diffraction result.
利用电子背散射衍射（EBSD）、原位中子衍射和能量选择性中子成像（ESNI）方法，在加载条件下对一种三元辅助双相不锈钢中的晶相体积分数进行了从微米到厘米尺度的分析。与EBSD的局部研究不同，ESNI以体积平均的方式在整个试样上提供宏观空间分布，空间分辨率约为65μm。ESNI表明，马氏体集中在颈缩区域，并估计在应变0.2时其体积分数为14%，这与中子衍射结果相当。
