Inverse pole figure mapping of bulk crystalline grains in a polycrystalline steel plate by pulsed neutron Bragg-dip transmission imaging
Inverse pole figure mapping of bulk crystalline grains in a polycrystalline steel plate by pulsed neutron Bragg-dip transmission imaging
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通过脉冲中子布拉格倾角透射成像对多晶钢板中的块体晶粒进行逆极图映射
DOI：
10.1107/s1600576717012900
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发表时间：
2017
影响因子：
6.1
通讯作者：
T. Shinohara and Y. Kiyanagi
中科院分区：
文献类型：
--
作者：
H. Sato;Y. Shiota;S. Morooka;Y. Todaka;N. Adachi;S. Sadamatsu;K. Oikawa;M. Harada;S. Y. Zhang;Y. H. Su;T. Kamiyama;M. Ohnuma;M. Furusaka;T. Shinohara and Y. Kiyanagi
本文提出了一种利用中子布拉格倾角透射法进行多晶体成图的新方法。这有望成为一种新的材料表征工具，它可以同时映射平行于入射光束的晶粒的结晶方向。该方法可能具有比中子衍射成像更高的空间分辨率。作为示范，在J-PARC的束线MLF BL 10 NOBORU上进行了布拉格浸渍中子透射实验。使用大晶粒Si钢板。由于该样品包括多个晶粒沿着中子束传输路径，这是一个具有挑战性的任务，现有的方法来分析每个晶粒的晶格方向。提出了一种基于数据库匹配的布拉格凹陷透射率测量数据分析方法。结果，确定了沿中子传输路径的晶粒数及其沿着晶向。
A new mapping procedure for polycrystals using neutron Bragg-dip transmission is presented. This is expected to be useful as a new materials characterization tool which can simultaneously map the crystallographic direction of grains parallel to the incident beam. The method potentially has a higher spatial resolution than neutron diffraction imaging. As a demonstration, a Bragg-dip neutron transmission experiment was conducted at J-PARC on beamline MLF BL10 NOBORU. A large-grained Si–steel plate was used. Since this specimen included multiple grains along the neutron beam transmission path, it was a challenging task for existing methods to analyse the direction of the crystal lattice of each grain. A new data-analysis method for Bragg-dip transmission measurements was developed based on database matching. As a result, the number of grains and their crystallographic direction along the neutron transmission path have been determined.