Effects of aging on impact behaviour of different stainless steel weldments
- 1 November 2001
- journal article
- research article
- Published by SAGE Publications in Materials Science and Technology
- Vol. 17 (11), 1391-1397
- https://doi.org/10.1179/026708301101509359
Abstract
Instrumented impact testing was used to investigate the effects of aging on the impact deformation and fracture of different weldments of an AISI type 316L stainless steel plate and a superduplex stainless steel plate. Aging at 800 degreesC of metal inert gas (MIG) and laser beam (LB) weldments of the 316L stainless steel plate produced a precipitation of sigma phase, which was more intense in the MIG weldments. Correspondingly, the MIG weldments showed a noticeable decrease in impact energy and in impact yield and maximum loads as the aging time was increased. The LB weldments, on the other hand, showed an initial decrease in absorbed energy followed by a noticeable increase, because of the appearance of delaminations during the fracture event. Aging at 900 degreesC of the parent metal and of LB and plasma arc (PA) weldments of the superduplex stainless steel plate produced a precipitation of sigma phase which was much more intense in the parent metal. Both the parent metal and the weldments showed a noticeable decrease in impact energy and in impact yield and maximum loads as the aging time was increased. These weldments were found to be more sensitive to the precipitation of sigma phase than the austenitic stainless steel weldments.This publication has 7 references indexed in Scilit:
- σ-PHASE PRECIPITATION IN STABILIZED AUSTENITIC STAINLESS STEELSActa Materialia, 2000
- Super duplex stainless steelsMaterials Science and Technology, 1992
- Aging at 400–600°C of submerged arc welds of 22Cr–3Mo–8Ni duplex stainless steel and its effect on toughness and microstructureMaterials Science and Technology, 1991
- Analysis of impact properties of A533 steel for nuclear reactor pressure vessel by instrumented Charpy testEngineering Fracture Mechanics, 1984
- Impact Three-Point Bend Testing for Notched and Precracked SpecimensJournal of Testing and Evaluation, 1978
- Dynamic Fracture Toughness Measurements of High-Strength Steels Using Precracked Charpy SpecimensPublished by ASTM International ,1974
- A mechanism for the control of crack propagation in all-brittle systemsProceedings of the Royal Society of London. Series A - Mathematical and Physical Sciences, 1964