Nondestructive determination of tensile properties and fracture toughness of cold worked A36 steel

Citation
Kl. Murty et al., Nondestructive determination of tensile properties and fracture toughness of cold worked A36 steel, INT J PRES, 75(11), 1998, pp. 831-840
Citations number
16
Categorie Soggetti
Mechanical Engineering
Journal title
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
ISSN journal
03080161 → ACNP
Volume
75
Issue
11
Year of publication
1998
Pages
831 - 840
Database
ISI
SICI code
0308-0161(199809)75:11<831:NDOTPA>2.0.ZU;2-A
Abstract
Tensile and fracture properties of ASTM grade A36 steel have been studied u sing nondestructive Stress-Strain Microprobe(TM) system (SSM), which is dev eloped on the basis of automated ball indentation (ABI) technique. Tests ha ve been carried out on as-received, and cold worked (4, 8 and 12%) material s at several temperatures in the range - 150 degrees C- + 200 degrees C at a constant strain rate. Tensile properties determined from ABI tests agreed well with the results from conventional tensile tests. The elastic-plastic fracture toughness parameter K-JC was estimated from the ABI data. As expe cted, cold working resulted in increase in strength, decrease in fracture t oughness and increase in ductile to brittle transition temperature. ABI is a reliable nondestructive technique for determining tensile and fracture pr operties of materials and has potential applications in the nuclear industr y particularly to determine toughness degradation due to aging in service. (C) 1998 Elsevier Science Ltd. All rights reserved.