Abstract
This paper examines the effects of test specimen size on the cryogenic fracture toughness properties of a nitrogen-strengthened austenitic stainless steel for superconducting magnet structures in fusion energy systems. Single-specimen J-integral tests were performed on CT (compact tension) specimens with and without side-grooves in liquid helium at 4 K. The aspect ratio (specimen width to thickness) and thickness were varied. A three-dimensional finite element analysis was also conducted to investigate the effects of specimen thickness and side-groove on the through thickness distributions of the J-integral values. The results of the finite element analysis are used to supplement the experimental data.
| Original language | English |
|---|---|
| Pages (from-to) | 1-7 |
| Number of pages | 7 |
| Journal | Fusion Engineering and Design |
| Volume | 73 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2005 Apr |
| Externally published | Yes |
Keywords
- Austenitic stainless steel
- Compact tension
- Finite element analysis
- Fracture mechanics
- Liquid helium temperature
- Superconducting fusion magnets
ASJC Scopus subject areas
- Civil and Structural Engineering
- Nuclear Energy and Engineering
- Materials Science(all)
- Mechanical Engineering