High-energy-particle irradiation in metals produces cascade damage. If the particle energy is high enough, a cascade is divided into subcascades. In each subcascade, a vacancy rich area is surrounded by an interstitial area. Vacancy clusters are expected to form directly in the vacancy rich area. In this study, the vacancy cluster formation ratio in subcascades was estimated by positron annihilation lifetime spectroscopy and transmission electron microscopy in commercial stainless steels and their model alloys. The vacancy cluster formation ratio was 1.7x10-3 and 9.1x10-5 in austenitic stainless steel and ferritic/martensitic stainless steel, respectively.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2016 Jan 26|
|Event||International Workshop on Positron Studies of Defects 2014, PSD 2014 - Kyoto, Japan|
Duration: 2014 Sep 14 → 2014 Sep 19
ASJC Scopus subject areas
- Physics and Astronomy(all)