Materials structure and strain analysis using time-of-flight neutron diffraction

飛行時間法中性子回折を用いた材料構造と歪み解析

Zhang, S. Y.*; Godfrey, E.*; Abbey, B.*; 徐 平光   ; 友田 陽*; Liljedahl, D.*; Zanellato, O.*; Fitzpatrick, M.*; Kelleher, J.*; Siano, S.*; Santisteban, J.*; Korsunsky, A. M.*

Zhang, S. Y.*; Godfrey, E.*; Abbey, B.*; Xu, P. G.; Tomota, Yo*; Liljedahl, D.*; Zanellato, O.*; Fitzpatrick, M.*; Kelleher, J.*; Siano, S.*; Santisteban, J.*; Korsunsky, A. M.*

核破砕ソースからのパルス中性子ビームを用いた中性子回折や中性子イメージング技術による材料評価の多数の可能性を紹介した。具体的には、高温動的フェライト変態,航空複合結構件の低温残留応力,溶接部残留応力に及ぼす溶接手順の影響,飛行機エンジン・ニッケル合金部件の摩擦溶接応力の分析,古代青銅芸術品への応力分析の応用及び中性子応力イメージングなどの事例を紹介した。

Pulsed neutron beams available at the ISIS spallation source offer diverse possibilities for materials characterization using diffraction and imaging. In this paper, we review a range of applications of the time-of-flight neutron diffraction for the characterization of phase transformations and residual stress states in industrially-relevant situations. The setup of the ENGIN-X instrument at ISIS is described, followed by a series of case studies based on the recently obtained results.