Mechanical and microstructural investigation of dual phase stainless steel (LDX2101) under a wide range of strain rates
conference contribution
posted on 2017-01-01, 00:00authored byAli Ameri, Juan Escobedo-Diaz, Mahmud AshrafMahmud Ashraf, Andrew Brown, Paul Hazell, Hutchison Wayne, Zakaria Quadir
The mechanical response and the microstructural evolution of lean duplex stainless steel 2101 (LDSS 2101) under a wide range of strain rates has been investigated. Experimental testing spanned from quasistatic, high strain-rate (Split Hopkinson Pressure Bar) and shock loading. The microstructural changes, e.g. phase transformation and grain rotation, texture and substructure evolution, were investigated by optical microscopy, X-ray diffraction (XRD) and electron-backscattered diffraction (EBSD). A significant increase in the yield stress with increasing strain rate was observed. The plastic deformation, e.g. work hardening rate, was also depended on the strain-rate. The threshold stress for the iron-epsilon phase transformation was obtained from free surface velocity measurements and the retained high pressure phase was assessed by XRD measurements.
History
Location
St. Louis, Mo.
Start date
2017-07-09
End date
2017-07-14
Language
eng
Publication classification
E1.1 Full written paper - refereed
Editor/Contributor(s)
[Unknown]
Title of proceedings
Proceedings of the 20th Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter
Event
American Physical Society. Conference (20th : 2017 : St. Louis, Mo.)