Dislocation Loop Formation and Growth under In Situ Laser and/or Electron Irradiation

DOI 機関リポジトリ (HANDLE) HANDLE PDF Web Site ほか1件をすべて表示 一部だけ表示 被引用文献1件 オープンアクセス

説明

Vacancies and interstitial atoms are primary lattice (point) defects that cause observable microstructural changes, such as the formation of dislocation loops and voids in crystalline solids. These defects’ diffusion properties determine the phase stability and environmental resistibility of macroscopic materials under ambient conditions. Although in situ methods have been proposed for measuring the diffusion energy of point defects, directmeasurement has been limited. In this study, we propose an alternative in situ method to measure the activation energy for vacancymigration under laser irradiation using a pulsed laser beamfroma laser-equipped high-voltage electron microscope (laser-HVEM).We made in situ observations that revealed the formation and growth of vacancy dislocation loops in an austenitic stainless steel during laser irradiation. These loops continued to grow when thermal annealing was performed after laser irradiation at the same temperature. We anticipate that laser-HVEM will provide a new method for investigating lattice defects.

収録刊行物

被引用文献 (1)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ