SA312 type 304LN stainless steel material, having closer control over impurities and inclusion content, is the intended piping material in the Advanced Heavy Water Reactors. Deformation, fatigue and fracture behaviour of this material and its weldments have been characterized at ambient temperature and at 558K. The details of the fractographic investigations and stretch zone width measurements are also discussed. The base metals shows high initiation toughness (>500 kJ/m2) and large tearing modulus at ambient and operating temperatures. Shielded Metal Arc Welding (SMAW) weld metal shows much much reduced initiation toughness and tearing resistance in comparison to base metal and Gas Tungsten Arc Welding (GTAW) welds. This is attributed to larger density of second phase inclusions in the SMAW weld metal. SZW measurements give a good alternate estimate of the toughness of the materials. Fatigue crack growth rate in SMAW weld metal was found to be comparable to base metal at higher load ratios.
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14th International Conference on Nuclear Engineering
July 17–20, 2006
Miami, Florida, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
0-7918-4242-8
PROCEEDINGS PAPER
Fracture Behaviour of Type 304LN Stainless Steel and Its Welds
J. S. Dubey,
J. S. Dubey
Bhabha Atomic Research Centre, Mumbai, India
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J. K. Chakravartty,
J. K. Chakravartty
Bhabha Atomic Research Centre, Mumbai, India
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P. K. Singh,
P. K. Singh
Bhabha Atomic Research Centre, Mumbai, India
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S. Banerjee
S. Banerjee
Bhabha Atomic Research Centre, Mumbai, India
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J. S. Dubey
Bhabha Atomic Research Centre, Mumbai, India
J. K. Chakravartty
Bhabha Atomic Research Centre, Mumbai, India
P. K. Singh
Bhabha Atomic Research Centre, Mumbai, India
S. Banerjee
Bhabha Atomic Research Centre, Mumbai, India
Paper No:
ICONE14-89720, pp. 663-672; 10 pages
Published Online:
September 17, 2008
Citation
Dubey, JS, Chakravartty, JK, Singh, PK, & Banerjee, S. "Fracture Behaviour of Type 304LN Stainless Steel and Its Welds." Proceedings of the 14th International Conference on Nuclear Engineering. Volume 1: Plant Operations, Maintenance and Life Cycle; Component Reliability and Materials Issues; Codes, Standards, Licensing and Regulatory Issues; Fuel Cycle and High Level Waste Management. Miami, Florida, USA. July 17–20, 2006. pp. 663-672. ASME. https://doi.org/10.1115/ICONE14-89720
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