Multiaxial Creep-Fatigue and Creep-Ratcheting Failures of Grade 91 and Haynes 230 Alloys Toward Addressing Design Issues of Gen IV Nuclear Power Plants

Hassan, Tasnim¹  Lissenden, Cliff²  Carroll, Laura³ 

[1]North Carolina State Univ., Raleigh, NC (United States)

[2]Penn State Univ., University Park, PA (United States)

[3]Idaho National Lab. (INL), Idaho Falls, ID (United States)

关键词: CREEP;    NUCLEAR POWER PLANTS;    FATIGUE;    RATCHETING;    TEMPERATURE RANGE 1000-4000 K;    FINITE ELEMENT METHOD;    DESIGN;    FAILURES;    A CODES;    TEMPERATURE DEPENDENCE;    HAYNES ALLOYS;    INCONEL 617;    DYNAMIC LOADS;   

DOI  :  10.2172/1178428
RP-ID  :  DOE/NEUP--09-832
PID  :  OSTI ID: 1178428
Others  :  Other: 09-832
Others  :  TRN: US1500354

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The proposed research will develop systematic sets of uniaxial and multiaxial experimental data at a very high temperature (850-950?��C) for Alloy 617. The loading histories to be prescribed in the experiments will induce creep-fatigue and creep-ratcheting failure mechanisms. These experimental responses will be scrutinized in order to quantify the influences of temperature and creep on fatigue and ratcheting failures. A unified constitutive model (UCM) will be developed and validated against these experimental responses. The improved UCM will be incorporated into the widely used finite element commercial software packages ANSYS. The modified ANSYS will be validated so that it can be used for evaluating the very high temperature ASME-NH design-by-analysis methodology for Alloy 617 and thereby addressing the ASME-NH design code issues.