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Influence of Low-Temperature Carburization on Fatigue Crack Growth of Austenitic Stainless Steel 316L

Hsu, Jui-Po
http://rave.ohiolink.edu/etdc/view?acc_num=case1212689690

Abstract Details

2008, Master of Sciences, Case Western Reserve University, Materials Science and Engineering.
A series of horizontal fatigue tests were performed in air or NaCl solution at room temperature on a 316L type austenitic stainless steel according to ASTM E647-93, “Standard test method for measurement of fatigue crack growth rates”. Direct observation of the carburization effect on fatigue crack growth in air was made on low-temperature carburized and non-carburized specimens under cyclic uniaxial tension. The threshold stress intensity factor range (ΔKth) increases from 8.1 ± 0.3 to 10.0 ± 0.3 MPa√m after low-temperature carburizing, a 23% improvement in retarding crack growth initiation. The resistance to fatigue crack propagation is also improved by decreasing the fatigue crack growth rate at a given value of the stress intensity factor range (ΔK ). Fatigue results in NaCl solution indicate that carburization process does not change the resistance to corrosion fatigue. In addition, SEM fractographic investigation shows no obvious significant difference on fracture mechanisms observed in carburized and non-carburized specimens.
Arthur Heuer, PhD (Committee Chair)
Frank Ernst, PhD (Committee Member)
Gary Michal, PhD (Committee Member)
John Lewandowski, PhD (Committee Member)
91 p.
Materials Science
316L; fatigue; fatigue crack growth rate; WOL; FCGR; low-temperature carburization; LTCSS;

Recommended Citations

Citations

  • Hsu, J.-P. (2008). Influence of Low-Temperature Carburization on Fatigue Crack Growth of Austenitic Stainless Steel 316L [Master's thesis, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1212689690

    APA Style (7th edition)

  • Hsu, Jui-Po. Influence of Low-Temperature Carburization on Fatigue Crack Growth of Austenitic Stainless Steel 316L. 2008. Case Western Reserve University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1212689690.

    MLA Style (8th edition)

  • Hsu, Jui-Po. "Influence of Low-Temperature Carburization on Fatigue Crack Growth of Austenitic Stainless Steel 316L." Master's thesis, Case Western Reserve University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1212689690

    Chicago Manual of Style (17th edition)

case1212689690
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© 2008, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.