Effect of Thermal Aging on Fracture Mechanical Properties and Crack Propagation Behavior of Alloy 52 Narrow-Gap Dissimilar Metal Weld

2017 ◽  
pp. 1949-1963 ◽  
Author(s):  
Matias Ahonen ◽  
Sebastian Lindqvist ◽  
Teemu Sarikka ◽  
Jari Lydman ◽  
Roman Mouginot ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Crack Propagation ◽  
Thermal Aging ◽  
Narrow Gap ◽  
Dissimilar Metal ◽  
Propagation Behavior ◽  
Dissimilar Metal Weld ◽  
Metal Weld ◽  
Crack Propagation Behavior

scholarly journals Mechanical Properties Evaluation and Crack Propagation Behavior in Dissimilar Metal Welded Joints of 304 L Austenitic Stainless Steel and SA508 Low-Alloy Steel

2022 ◽  
Vol 2022 ◽  
pp. 1-13
Author(s):  
Yuman Sun ◽  
He Xue ◽  
Fuqiang Yang ◽  
Shuai Wang ◽  
Shun Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Crack Propagation ◽  
Welded Joint ◽  
Initial Crack ◽  
Boundary Line ◽  
Pressurized Water ◽  
Propagation Length ◽  
Dissimilar Metal ◽  
Propagation Behavior ◽  
Crack Propagation Behavior

The material mechanical properties and crack propagation behavior of dissimilar metal welded joint (DMWJ) of pressurized water reactor (PWR) was investigated. In this research, the mechanical parameters of the cladding layer materials (304L-SA508) of the DMWJ in PWRs were obtained by the continuous indentation test. Simultaneously, the user-defined (USDFLD) subroutine in ABAQUS was used to establish the heterogeneous materials model of the welded joint. On this basis, the local crack propagation path of DMWJs has been discussed based on the extended finite element method (XFEM). The result indicated that the strength value at the fusion boundary line (FB line) is the largest, and the yield strength reaches 689 MPa. The yield stress values of the cladding metal (304 L) and base metal (SA508) are 371 MPa and 501 MPa, respectively. Affected by the material constraint effect of the DMWJ, the crack will propagate through the FB line when the initial crack is perpendicular to the FB line. And when the initial crack parallels the FB line, the crack will deviate from it. Meanwhile, the crack propagation length is smaller as the initial crack tip is closer to the FB line when the load condition is constant.

Effects of thermal aging on microstructures of low alloy steel–Ni base alloy dissimilar metal weld interfaces

2013 ◽  
Vol 441 (1-3) ◽  
pp. 493-502 ◽  
Author(s):  
Kyoung Joon Choi ◽  
Jong Jin Kim ◽  
Bong Ho Lee ◽  
Chi Bum Bahn ◽  
Ji Hyun Kim
Keyword(s):  
Alloy Steel ◽  
Thermal Aging ◽  
Base Alloy ◽  
Low Alloy Steel ◽  
Dissimilar Metal ◽  
Dissimilar Metal Weld ◽  
Metal Weld

Effect of mechanical mismatch on fracture mechanical behavior of SA 508 – Alloy 52 narrow gap dissimilar metal weld

2017 ◽  
Vol 157 ◽  
pp. 30-42 ◽  
Author(s):  
Teemu Sarikka ◽  
Matias Ahonen ◽  
Roman Mouginot ◽  
Pekka Nevasmaa ◽  
Päivi Karjalainen-Roikonen ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Narrow Gap ◽  
Dissimilar Metal ◽  
Dissimilar Metal Weld ◽  
Metal Weld

In-situ investigation of thermal aging effect on oxide formation in Ni-base alloy/low alloy steel dissimilar metal weld interfaces

2014 ◽  
Vol 86 ◽  
pp. 295-303 ◽  
Author(s):  
Jongjin Kim ◽  
Seung Hyun Kim ◽  
Kyung Joon Choi ◽  
Chi Bum Bahn ◽  
Il Soon Hwang ◽  
...  
Keyword(s):  
Thermal Aging ◽  
Base Alloy ◽  
Aging Effect ◽  
Low Alloy Steel ◽  
Oxide Formation ◽  
Dissimilar Metal ◽  
In Situ Investigation ◽  
Dissimilar Metal Weld ◽  
Metal Weld

Effects of thermal aging on the microstructure of Type-II boundaries in dissimilar metal weld joints

2015 ◽  
Vol 459 ◽  
pp. 5-12 ◽  
Author(s):  
Seung Chang Yoo ◽  
Kyoung Joon Choi ◽  
Chi Bum Bahn ◽  
Si Hoon Kim ◽  
Ju Young Kim ◽  
...  
Keyword(s):  
Thermal Aging ◽  
Type Ii ◽  
Dissimilar Metal ◽  
Weld Joints ◽  
Dissimilar Metal Weld ◽  
Metal Weld

scholarly journals Role of LPSO Phase in Crack Propagation Behavior of an As-Cast Mg-Y-Zn Alloy Subjected to Dynamic Loadings

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 498 ◽  
Author(s):  
Xuezhi Shi ◽  
Yunqian Long ◽  
Huiqiu Zhang ◽  
Liqiao Chen ◽  
Yingtang Zhou ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Crack Propagation ◽  
Crack Opening ◽  
Dynamic Crack Propagation ◽  
Dynamic Crack ◽  
Lpso Phase ◽  
Propagation Behavior ◽  
Dynamic Loadings ◽  
Crack Propagation Behavior

In this work, the role of long period stacking ordered (LPSO) phase in the crack propagation behavior of an as-cast Mg95.5Y3Zn1.5 alloy was investigated by dynamic four-point bent tests. The as-cast Mg95.5Y3Zn1.5 alloy is mainly composed of Mg matrix, 18R LPSO phase located at the grain boundaries and 14H LPSO phase located within the Mg matrix. The alloy exhibits excellent dynamic mechanical properties; the yield stress, maximum stress and strain to failure are 190.51 ± 3.52 MPa, 378.32 ± 4.26 MPa and 0.168 ± 0.006, respectively, at the strain rate of ~3000 s−1. The LPSO phase effectively hinders dynamic crack propagation in four typical ways, including crack tip blunting, crack opening inhibition, crack deflection and crack bridging, which are beneficial to the mechanical properties of the alloy under dynamic loadings.

Sign in / Sign up

Export Citation Format

Share Document