Assessment of Thermal Aging Effect on Fracture Toughness for Austenitic Stainless Steel Welds (ER347)

2019 ◽  
Vol 43 (3) ◽  
pp. 185-192
Author(s):  
In Hwan Shin ◽  
Ho Jung Lee ◽  
Sang Kyu Park
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Thermal Aging ◽  
Aging Effect ◽  
Steel Welds

The effect of thermal aging on impact behavior of austenitic stainless steel welds

2018 ◽  
Vol 2018 (0) ◽  
pp. OS1202
Author(s):  
Yuito KUROYAMA ◽  
Hiroshi ABE ◽  
Yutaka WATANABE
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Thermal Aging ◽  
Impact Behavior ◽  
Steel Welds

A parameter for characterizing thermal aging effect on fracture toughness of GTAW of 316L stainless steel

2020 ◽  
Vol 239 ◽  
pp. 107318
Author(s):  
Gyo-Geun Youn ◽  
Yun-Jae Kim ◽  
Yasufumi Miura
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Thermal Aging ◽  
316L Stainless Steel ◽  
Aging Effect

Thermal Aging Effect on the Ratcheting Behavior of Pressurized Elbow Pipe

2018 ◽  
Vol 140 (2) ◽  
Author(s):  
Caiming Liu ◽  
Dunji Yu ◽  
Waseem Akram ◽  
Xu Chen
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Aging Time ◽  
Thermal Aging ◽  
Aging Temperature ◽  
Aging Process ◽  
Kinematic Hardening ◽  
Aging Effect ◽  
Hardening Model ◽  
User Subroutine

In this study, the ratcheting behaviors of pressurized Z2CN18.10 austenitic stainless steel elbow pipe influenced by the thermal aging process were experimentally investigated in controlled constant internal pressure and reversed in-plane bending after different thermal aging periods (1000 h and 2000 h) at thermal aging temperature of 500 °C. It is shown that the ratcheting behavior of pressured elbow pipe is highly affected by the thermal aging process. The evaluation of ratcheting behavior of pressured elbow pipe was performed using Chen–Jiao–Kim (CJK) kinematic hardening model as a user subroutine of ANSYS. The relationships of yield stress σs and multiaxial parameter χ with thermal aging time were proposed. Ratcheting shakedown boundary of aged elbow pipe was evaluated by CJK model with thermal aging time.

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

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

Methodology for Estimating Thermal and Neutron Embrittlement of Austenitic Stainless Steel Welds During Service in Light Water Reactors

2016 ◽  
Vol 138 (4) ◽  
Author(s):  
O. K. Chopra ◽  
A. S. Rao
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Lower Bound ◽  
Thermal Aging ◽  
Welding Process ◽  
Charpy Impact ◽  
Inert Gas ◽  
Gas Tungsten Arc ◽  
Water Reactors

The effect of thermal aging on the degradation of fracture toughness and Charpy-impact properties of austenitic stainless steel (SS) welds has been characterized at reactor temperatures. The solidification behavior and the distribution and morphology of the ferrite phase in SS welds are described. Thermal aging of the welds results in moderate decreases in Charpy-impact strength and fracture toughness. The upper-shelf Charpy-impact energy of aged welds decreases by 50–80 J/cm2. The decrease in fracture-toughness J integral-resistance (J-R) curve or JIc is relatively small. Thermal aging has minimal effect and the welding process has a significant effect on the tensile strength. However, the existing data are inadequate to accurately establish the effect of the welding process on fracture properties of SS welds. Consequently, the approach used for evaluating thermal and neutron embrittlement of austenitic SS welds relies on establishing a lower-bound fracture-toughness J-R curve for unaged and aged and nonirradiated and irradiated SS welds. The existing fracture-toughness J-R curve data for SS welds have been reviewed and evaluated to define lower-bound J-R curves for submerged arc (SA)/shielded metal arc (SMA)/manual metal arc (MMA) welds and gas tungsten arc (GTA)/metal inert gas (MIG)/tungsten inert gas (TIG) welds in the unaged and aged conditions. At reactor temperatures, the fracture toughness of GTA/MIG/TIG welds is a factor of about 2.3 higher than that of SA/SMA/MMA welds. Thermal aging decreases the fracture toughness of all welds by about 20%. The potential combined effects of thermal and neutron embrittlement of austenitic SS welds are also described. Lower-bound curves are presented, which define the change in coefficient C and exponent n of the power-law J-R curve and the JIc value for SS welds as a function of neutron dose. The potential effects of reactor coolant environment on the fracture toughness of austenitic SS welds are also discussed.

scholarly journals Evaluation of the Effects of Thermal Aging of Austenitic Stainless Steel Welds Using Small Punch Test

2015 ◽  
Vol 130 ◽  
pp. 1010-1018 ◽  
Author(s):  
S.H. Hong ◽  
M.-G. Seo ◽  
C.H. Jang ◽  
K.-S. Lee
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Thermal Aging ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Steel Welds
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