Abstract
The 5160 spring steel is mainly used to endure fatigue and since its Mf is below room temperature, retained austenite is usually present after conventional quenching, which is detrimental from a fatigue point of view. To reduce the amount of retained austenite, a partial decarburization was promoted (to increase the Ms and Mf, respectively) by austenitizing the steel at different temperatures and times in air, prior to performing an interrupted quenching in an accelerated media (brine) instead of the conventional oil quenching. The same quenching conditions with partial decarburization and without decarburization are compared. In addition, conventional oil quenching was performed as reference. Results showed that with a controlled partial decarburization, it is possible to increase the fatigue limit compared to the conditions without decarburization (both interrupted quenching and oil quenching). Fatigue experiments were carried out in a rotating bending fatigue type tester. Cooling curves, decarburization profiles, fraction of martensite plots, and fatigue data are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 34-43 |
| Number of pages | 10 |
| Journal | Materials Performance and Characterization |
| Volume | 3 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 17 Sep 2014 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Mechanics of Materials
- Polymers and Plastics
- Metals and Alloys
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Partial decarburization and intensive quenching to increase fatigue limit of quenched small parts. / Lozano, D. E.; Totten, G. E.; Martinez-Cazares, G. M.; Mercado-Solis, R.
In: Materials Performance and Characterization, Vol. 3, No. 4, 17.09.2014, p. 34-43.Research output: Contribution to journal › Article
TY - JOUR
T1 - Partial decarburization and intensive quenching to increase fatigue limit of quenched small parts
AU - Lozano, D. E.
AU - Totten, G. E.
AU - Martinez-Cazares, G. M.
AU - Mercado-Solis, R.
PY - 2014/9/17
Y1 - 2014/9/17
N2 - The 5160 spring steel is mainly used to endure fatigue and since its Mf is below room temperature, retained austenite is usually present after conventional quenching, which is detrimental from a fatigue point of view. To reduce the amount of retained austenite, a partial decarburization was promoted (to increase the Ms and Mf, respectively) by austenitizing the steel at different temperatures and times in air, prior to performing an interrupted quenching in an accelerated media (brine) instead of the conventional oil quenching. The same quenching conditions with partial decarburization and without decarburization are compared. In addition, conventional oil quenching was performed as reference. Results showed that with a controlled partial decarburization, it is possible to increase the fatigue limit compared to the conditions without decarburization (both interrupted quenching and oil quenching). Fatigue experiments were carried out in a rotating bending fatigue type tester. Cooling curves, decarburization profiles, fraction of martensite plots, and fatigue data are discussed.
AB - The 5160 spring steel is mainly used to endure fatigue and since its Mf is below room temperature, retained austenite is usually present after conventional quenching, which is detrimental from a fatigue point of view. To reduce the amount of retained austenite, a partial decarburization was promoted (to increase the Ms and Mf, respectively) by austenitizing the steel at different temperatures and times in air, prior to performing an interrupted quenching in an accelerated media (brine) instead of the conventional oil quenching. The same quenching conditions with partial decarburization and without decarburization are compared. In addition, conventional oil quenching was performed as reference. Results showed that with a controlled partial decarburization, it is possible to increase the fatigue limit compared to the conditions without decarburization (both interrupted quenching and oil quenching). Fatigue experiments were carried out in a rotating bending fatigue type tester. Cooling curves, decarburization profiles, fraction of martensite plots, and fatigue data are discussed.
UR - http://www.scopus.com/inward/record.url?scp=84949671870&partnerID=8YFLogxK
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U2 - 10.1520/MPC20140008
DO - 10.1520/MPC20140008
M3 - Article
AN - SCOPUS:84949671870
VL - 3
SP - 34
EP - 43
JO - Materials Performance and Characterization
JF - Materials Performance and Characterization
SN - 2165-3992
IS - 4
ER -