You need JavaScript to view this

Recovery in cold-worked alloy under pressure: example of AISI 316 stainless steel

Journal Article:

Abstract

In this paper we report the behaviour of defects under high pressure in severely cold-deformed 316 stainless steel. In situ electrical resistivity measurements indicate a minimum in the reduced resistivity ratio at 2 GPa associated with a characteristic relaxation time of 500 + - 5 sec. Microhardness data on pressure-treated and recovered samples are consistent with the electrical resistivity behaviour. X-ray powder diffraction rings indicate sharpening beyond 2 GPa. The decrease in the full width at half maximum (FWHM) of the strongest ring is about 2% at pressures beyond 2 GPa. Transmission electron microscopy reveals that samples pressure treated beyond 2 GPa have a polygonized dislocation structure. This is in sharp contrast to the tangled dislocation structure observed in the cold-worked samples. The experimental results suggest a recovery stage in cold-worked stainless steel at 2 GPa. We propose that the recovery process is activated through an enhanced vacancy concentration caused by deformation, a pressure-induced vacancy-dislocation interaction and consequently a pressure-assisted dislocation mobility leading to polygonization.
Publication Date:
Jun 01, 1986
Product Type:
Journal Article
Reference Number:
GBN-86-003222; EDB-88-038867
Resource Relation:
Journal Name: J. Mater. Sci.; (United Kingdom); Journal Volume: 21:6
Subject:
36 MATERIALS SCIENCE; STAINLESS STEEL-316; COMPRESSION; ELECTRIC CONDUCTIVITY; ACTIVATION ENERGY; COLD WORKING; DISLOCATIONS; MICROHARDNESS; RELAXATION TIME; TIME DEPENDENCE; TRANSMISSION ELECTRON MICROSCOPY; VACANCIES; VERY HIGH PRESSURE; X-RAY DIFFRACTION; ALLOYS; CHROMIUM ALLOYS; CHROMIUM STEELS; CHROMIUM-NICKEL STEELS; COHERENT SCATTERING; CORROSION RESISTANT ALLOYS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DIFFRACTION; ELECTRICAL PROPERTIES; ELECTRON MICROSCOPY; ENERGY; FABRICATION; HARDNESS; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; IRON ALLOYS; IRON BASE ALLOYS; LINE DEFECTS; MATERIALS; MATERIALS WORKING; MECHANICAL PROPERTIES; MICROSCOPY; MOLYBDENUM ALLOYS; NICKEL ALLOYS; PHYSICAL PROPERTIES; POINT DEFECTS; SCATTERING; STAINLESS STEELS; STEELS; 360104* - Metals & Alloys- Physical Properties
OSTI ID:
5742695
Research Organizations:
Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, IN
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: JMTSA
Submitting Site:
GBN
Size:
Pages: 1956-1962
Announcement Date:

Journal Article:

Citation Formats

Yousuf, M, Sahu, P C, Raghunathan, V S, and Govinda Rajan, K. Recovery in cold-worked alloy under pressure: example of AISI 316 stainless steel. United Kingdom: N. p., 1986. Web. doi:10.1007/BF00547933.
Yousuf, M, Sahu, P C, Raghunathan, V S, & Govinda Rajan, K. Recovery in cold-worked alloy under pressure: example of AISI 316 stainless steel. United Kingdom. doi:10.1007/BF00547933.
Yousuf, M, Sahu, P C, Raghunathan, V S, and Govinda Rajan, K. 1986. "Recovery in cold-worked alloy under pressure: example of AISI 316 stainless steel." United Kingdom. doi:10.1007/BF00547933. https://www.osti.gov/servlets/purl/10.1007/BF00547933.
@misc{etde_5742695,
title = {Recovery in cold-worked alloy under pressure: example of AISI 316 stainless steel}
author = {Yousuf, M, Sahu, P C, Raghunathan, V S, and Govinda Rajan, K}
abstractNote = {In this paper we report the behaviour of defects under high pressure in severely cold-deformed 316 stainless steel. In situ electrical resistivity measurements indicate a minimum in the reduced resistivity ratio at 2 GPa associated with a characteristic relaxation time of 500 + - 5 sec. Microhardness data on pressure-treated and recovered samples are consistent with the electrical resistivity behaviour. X-ray powder diffraction rings indicate sharpening beyond 2 GPa. The decrease in the full width at half maximum (FWHM) of the strongest ring is about 2% at pressures beyond 2 GPa. Transmission electron microscopy reveals that samples pressure treated beyond 2 GPa have a polygonized dislocation structure. This is in sharp contrast to the tangled dislocation structure observed in the cold-worked samples. The experimental results suggest a recovery stage in cold-worked stainless steel at 2 GPa. We propose that the recovery process is activated through an enhanced vacancy concentration caused by deformation, a pressure-induced vacancy-dislocation interaction and consequently a pressure-assisted dislocation mobility leading to polygonization.}
doi = {10.1007/BF00547933}
journal = {J. Mater. Sci.; (United Kingdom)}
volume = {21:6}
journal type = {AC}
place = {United Kingdom}
year = {1986}
month = {Jun}
}