Local fracture toughness of stainless steel welds at 4 K by J-evaluation on tensile test

2002 ◽  
Author(s):  
T. Ogata
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Tensile Test ◽  
Local Fracture ◽  
Steel Welds

scholarly journals Microstructure and mechanical properties of AISI 439 ferritic stainless steel welds without filler metal

2019 ◽  
Vol 29 ◽  
pp. 1-12
Author(s):  
Juan Manuel Salgado López ◽  
Marc Preud homme ◽  
Francisco Lopez Monroy ◽  
Jose Luis Ojeda Elizarráraz ◽  
Arturo Toscano Giles
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Tensile Test ◽  
Grain Growth ◽  
Ferritic Stainless Steel ◽  
Filler Metal ◽  
Testing Machine ◽  
Thin Plates ◽  
Technical Literature ◽  
Steel Welds

In literature, it has been reported that a current intensity lower than 120 A leads to a microstructure without grain growth in the heat affected zone (HAZ) of ferritic stainless steel welds. Nevertheless, in technical literature there is little information about the reduction in mechanical properties of ferritic stainless steel welds without filler metal due to grain growth in the HAZ. In this work, thin plates of ferritic stainless 439 steel were welded using pulse current gas tungsten arc welding (P-GTAW) without filler metal. The microstructures in the HAZ were analyzed and the mechanical properties on the welded joint were found by tensile test. This was carried out by cutting samples for the tensile test from the weldments and then tested in a universal testing machine. The fracture surface were observed using scanning electron microscope.

Secondary Phases Quantification and Fracture Toughness at Cryogenic Temperature of Austenitic Stainless Steel Welds for High-Field Superconducting Magnets

2018 ◽  
Vol 28 (4) ◽  
pp. 1-4
Author(s):  
Ignacio Aviles Santillana ◽  
Pilar Fernandez Pison ◽  
Stefanie Agnes Elisabeth Langeslag ◽  
Stefano Sgobba ◽  
Alexander Lunt ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
High Field ◽  
Cryogenic Temperature ◽  
Superconducting Magnets ◽  
Secondary Phases ◽  
Steel Welds

Fracture Toughness of Aged Stainless Steel Primary Piping Welds Evaluated by Multiple and Single-Specimen Methods

1993 ◽  
Vol 115 (2) ◽  
pp. 201-206 ◽  
Author(s):  
F. H. Huang
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Electric Potential ◽  
Compact Tension ◽  
Test Facility ◽  
Single Specimen ◽  
Critical Fracture ◽  
Toughness Testing ◽  
Steel Welds

Fracture toughness testing was conducted on compact tension specimens cut from the Fast Flux Test Facility primary piping materials of 16-8-2 and 308 stainless steel welds aged at 427 and 482°C for 20,000 and 50,000 hr. The ductile fracture behavior of the materials was characterized at 205, 427, and 482°C using multiple and electric-potential single-specimen techniques. Electric-potential data were used to caculate crack extensions via an electric-potential calibration equation for the construction of J-R curves. Results demonstrate that the critical fracture-toughness values are in good agreement with those from the multiple-specimen method. Results showed that 20,000-hr aging caused more than 35 percent degradation in fracture resistance, and 50,000-hr aging resulted in a slight increase in Jc for 16-8-2 stainless steel welds. It was found that the fracture toughness levels of the primary piping after long-term aging were high and adequate at the aging temperatures and that fuel handling temperature, nonductile fracture was not expected to occur in these materials.

A Comparative Study of Fracture Toughness at Cryogenic Temperature of Austenitic Stainless Steel Welds

2018 ◽  
Vol 27 (4) ◽  
pp. 1995-2002 ◽  
Author(s):  
I. Aviles Santillana ◽  
C. Boyer ◽  
P. Fernandez Pison ◽  
A. Foussat ◽  
S. A. E. Langeslag ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Comparative Study ◽  
Cryogenic Temperature ◽  
Steel Welds
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