Fabrication of Metallic Pressure Vessels

Greulich, Owen R.; Jawad, Maan H.

doi:10.1002/9781119674870

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In terms of total welding passes used in the final layer (weld cap), W2 contained four passes, W3 contained three passes, W4 contained two passes, and W1 contained a single pass. Typically, residual stresses can be reduced in a weld by increasing the number of passes, reducing the local heat input, and lowering the temperature differential [24]. Of note from fractography, W1 was the only weld that showed signs of wormhole porosity, which is likely due to contamination of the flux core (moisture absorption is a common cause).…”

Section: Comparisons Between Weldsmentioning

confidence: 99%

Fracture toughness tests at 77 K and 4 K on 316L stainless steel welded plates

Benzing

2023

View full text Add to dashboard Cite

In the framework of a collaborative project between ASME, NASA, and NIST, quasi-static fracture toughness tests have been performed at liquid nitrogen temperature (77 K, or -196 °C) and liquid helium temperature (4 K, or -269 °C) on weld specimens extracted from the centers of four 316L welded stainless steel plates, each produced by a different vendor. Although the plates were produced in accordance with the same specifications from the same material (316L), large differences in fracture toughness have been observed, with the best weld (W2) exhibiting almost twice the critical toughness of the worst (W1) at 77 K (219 kJ/m2 vs. 113 kJ/m2), and about seven times the critical toughness of W1 at 4 K (146 kJ/m2 as compared to 21 kJ/m2). The Charpy absorbed energies recorded at 77 K for three of the welds within the same project were found to be strongly linearly correlated with fracture toughness at both test temperatures. The exception was weld W4, which provided the highest impact toughness and the second lowest quasi-static fracture toughness (stable crack initiation and resistance to crack propagation).

show abstract

Section: Comparisons Between Weldsmentioning

confidence: 99%

Fracture toughness tests at 77 K and 4 K on 316L stainless steel welded plates

Benzing

2023

View full text Add to dashboard Cite

show abstract

Section: Comparisons Between Weldsmentioning

confidence: 99%

Fracture toughness tests at 77 K and 4 K on 316L stainless steel welded plates

Benzing¹

2022

View full text Add to dashboard Cite

In the framework of a collaborative project between ASME, NASA, and NIST, quasi-static fracture toughness tests have been performed at liquid nitrogen temperature (77 K, or -196 C) and liquid helium temperature (4 K, or -269 C) on weld specimens extracted from the centers of four 316L welded stainless steel plates, each produced by a different vendor. Although the plates were produced in accordance with the same specifications from the same material (316L), large differences in fracture toughness have been observed, with the best weld (W2) exhibiting twice the critical toughness of the worst (W1) at 77 K, and more than seven times the critical toughness of W1 at 4 K. The Charpy absorbed energies recorded at 77 K for three of the welds within the same project were found to be strongly linearly correlated with fracture toughness at both test temperatures. The exception was weld W4, which provided the highest impact toughness and the second lowest quasi-static fracture toughness (stable crack initiation and resistance to crack propagation).

show abstract

Fabrication of Metallic Pressure Vessels

Cited by 2 publications

References 0 publications

Fracture toughness tests at 77 K and 4 K on 316L stainless steel welded plates

Fracture toughness tests at 77 K and 4 K on 316L stainless steel welded plates

Fracture toughness tests at 77 K and 4 K on 316L stainless steel welded plates

Contact Info

Product

Resources

About