Tensile and Fatigue Testing and Material Hardening Model Development for 508 LAS Base Metal and 316 SS Similar Metal Weld under In-air and PWR Primary Loop Water Conditions

Mohanty, Subhasish¹  Soppet, William¹  Majumdar, Saurin¹  Natesan, Ken¹ 

[1] Argonne National Lab. (ANL), Argonne, IL (United States)

关键词: Environmental Fatigue;    Finite Element Modeling;    Cyclic Hardening;    Cyclic Plasticity;    Chaboche Model;    Kinematic Hardening Parameters;    508 Low Alloy Steel;    316 Stainless Steel;    Pressurized Water Reactor;    Tensile Test Data;    Fatigue Test Data;   

DOI  :  10.2172/1224989
RP-ID  :  ANL/LWRS--15/02
PID  :  OSTI ID: 1224989
Others  :  Other: 121906

美国|英语

来源: SciTech Connect

【 摘 要 】

This report provides an update on an assessment of environmentally assisted fatigue for light water reactor components under extended service conditions. This report is a deliverable in September 2015 under the work package for environmentally assisted fatigue under DOE???s Light Water Reactor Sustainability program. In an April 2015 report we presented a baseline mechanistic finite element model of a two-loop pressurized water reactor (PWR) for systemlevel heat transfer analysis and subsequent thermal-mechanical stress analysis and fatigue life estimation under reactor thermal-mechanical cycles. In the present report, we provide tensile and fatigue test data for 508 low-alloy steel (LAS) base metal, 508 LAS heat-affected zone metal in 508 LAS???316 stainless steel (SS) dissimilar metal welds, and 316 SS-316 SS similar metal welds. The test was conducted under different conditions such as in air at room temperature, in air at 300 oC, and under PWR primary loop water conditions. Data are provided on materials properties related to time-independent tensile tests and time-dependent cyclic tests, such as elastic modulus, elastic and offset strain yield limit stress, and linear and nonlinear kinematic hardening model parameters. The overall objective of this report is to provide guidance to estimate tensile/fatigue hardening parameters from test data. Also, the material models and parameters reported here can directly be used in commercially available finite element codes for fatigue and ratcheting evaluation of reactor components under in-air and PWR water conditions.