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Experimental and computational studies of load ratio effect on fatigue crack growth rates in Alloy 709 at elevated temperatures
Abstract
Abstract Experimental testing and finite element simulations of fatigue crack growth were performed in austenitic 20Cr‐25Ni (Alloy 709) steel at different load ratios and elevated temperatures. The experimental tests were performed using compact tension specimens, and crack growth rates were measured at stress intensity factors ranging between 5 and 35 MPa√m. Fractographic analysis using scanning electron microscopy indicated crack surface roughness and secondary cracking depending on testing temperature and load ratio. Finite element simulations of fatigue crack growth were performed to compute plasticity‐induced crack opening loads and predict crack growth rates. Predictions of fatigue crack growth rates using finite element simulations were performed using the computed crack‐tip opening loads, and they are shown to match well the experimental measurements.
- Authors:
-
- Mechanical Engineering Department University of Idaho Moscow Idaho USA
- Nuclear Engineering &, Industrial management University of Idaho Idaho Falls Idaho USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1995608
- Grant/Contract Number:
- DE‐NE0008443
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Fatigue and Fracture of Engineering Materials and Structures
- Additional Journal Information:
- Journal Name: Fatigue and Fracture of Engineering Materials and Structures Journal Volume: 46 Journal Issue: 10; Journal ID: ISSN 8756-758X
- Publisher:
- Wiley-Blackwell
- Country of Publication:
- United Kingdom
- Language:
- English
Citation Formats
Ramirez, Jose, Potirniche, Gabriel P., Shaber, Nicholas, Stephens, Robert, and Charit, Indrajit. Experimental and computational studies of load ratio effect on fatigue crack growth rates in Alloy 709 at elevated temperatures. United Kingdom: N. p., 2023.
Web. doi:10.1111/ffe.14089.
Ramirez, Jose, Potirniche, Gabriel P., Shaber, Nicholas, Stephens, Robert, & Charit, Indrajit. Experimental and computational studies of load ratio effect on fatigue crack growth rates in Alloy 709 at elevated temperatures. United Kingdom. https://doi.org/10.1111/ffe.14089
Ramirez, Jose, Potirniche, Gabriel P., Shaber, Nicholas, Stephens, Robert, and Charit, Indrajit. Mon .
"Experimental and computational studies of load ratio effect on fatigue crack growth rates in Alloy 709 at elevated temperatures". United Kingdom. https://doi.org/10.1111/ffe.14089.
@article{osti_1995608,
title = {Experimental and computational studies of load ratio effect on fatigue crack growth rates in Alloy 709 at elevated temperatures},
author = {Ramirez, Jose and Potirniche, Gabriel P. and Shaber, Nicholas and Stephens, Robert and Charit, Indrajit},
abstractNote = {Abstract Experimental testing and finite element simulations of fatigue crack growth were performed in austenitic 20Cr‐25Ni (Alloy 709) steel at different load ratios and elevated temperatures. The experimental tests were performed using compact tension specimens, and crack growth rates were measured at stress intensity factors ranging between 5 and 35 MPa√m. Fractographic analysis using scanning electron microscopy indicated crack surface roughness and secondary cracking depending on testing temperature and load ratio. Finite element simulations of fatigue crack growth were performed to compute plasticity‐induced crack opening loads and predict crack growth rates. Predictions of fatigue crack growth rates using finite element simulations were performed using the computed crack‐tip opening loads, and they are shown to match well the experimental measurements.},
doi = {10.1111/ffe.14089},
journal = {Fatigue and Fracture of Engineering Materials and Structures},
number = 10,
volume = 46,
place = {United Kingdom},
year = {Mon Jul 03 00:00:00 EDT 2023},
month = {Mon Jul 03 00:00:00 EDT 2023}
}
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