Abstract
Hugoniot Elastic Limit and spall strength of Fe-Cr-Ni stainless steel
near its dynamic fracture threshold at temperature from 293 K up to 173
K were determined from free surface velocity measurements of the samples
shocked up to velocities 120-350 m/sec. The recovered samples were
studied metallographically. The martensite generation in rarefaction
wave was found starting at temperature 240 K while the static martensite
transformation starting point in this steel is MS=214 K. The
martensite generation in tension is responsible for the the stainless
steel spall strength increase. A model capable of explaining of this
phenomena as well as of the stainless steel behavior near its fracture
threshold is suggested.
| Original language | English |
|---|---|
| Pages | 627-630 |
| DOIs | |
| State | Published - 1 May 1996 |
Keywords
- Fatigue brittleness fracture and cracks
- High-pressure and shock wave effects in solids and liquids
- Martensitic transformations
- Defects and impurities in crystals
- microstructure