Abstract
In contrast to their silent cracking behavior at room temperature the austenitic stainless steels are highly active acoustically during deformation and fracture at 4 K. Acoustic emission is promoted by low temperature strengthening and by discontinuous plastic flow in ductile alloys near absolute zero. The prospects are consequently good for acoustic emission monitoring as a tool in studying austenitic steels at cryogenic temperatures. This paper illustrates some potential applications in mechanical property determinations and presents test results acquired for two steels, Fe-18Cr-3Ni-13Mn, AISI 310S WM, and a shielded metal arc weld of AISI 310S BM, submerged in liquid helium. A monitoring apparatus is also described.
Original language | English |
---|---|
Title of host publication | Advances in Cryogenic Engineering |
Publisher | Publ by Plenum Publ Corp |
Pages | 387-395 |
Number of pages | 9 |
Volume | 34 |
ISBN (Print) | 0306428016 |
Publication status | Published - 1988 Dec 1 |
Event | Proceedings of the Seventh International Cryogenic Materials Conference - ICMC - St. Charles, IL, USA Duration: 1987 Jun 14 → 1987 Jun 18 |
Other
Other | Proceedings of the Seventh International Cryogenic Materials Conference - ICMC |
---|---|
City | St. Charles, IL, USA |
Period | 87/6/14 → 87/6/18 |
ASJC Scopus subject areas
- Engineering(all)