Abstract
In order to investigate the hardness dependence on the fatigue strengths for surface fracture and internal fracture, rotating bending fatigue tests were carried out for maraging steels using specimens with different hardness obtained by heat-treating at different under-aging conditions. Fatigue limit for surface fracture was evaluated in electro-polished specimens and the one for internal fracture was in shot-peened ones, where fatigue limits were defined as fatigue strengths at 107 cycles for surface fracture and 108 cycles for internal fracture, respectively. Fatigue limit for internal fracture increased with increase in hardness similar to the one for surface fracture. However, the proportional relationship between the fatigue limit and the hardness existed till higher hardness in the fatigue limit for internal fracture than in the one for surface fracture. This difference in the hardness dependence on fatigue limit was discussed from the viewpoint of the influence of humidity on the fatigue strength.
| Original language | English |
|---|---|
| Pages (from-to) | 1126-1132 |
| Number of pages | 7 |
| Journal | Zairyo/Journal of the Society of Materials Science, Japan |
| Volume | 56 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Dec 1 2007 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Influence of shot peening on fatigue strength of maraging steels with different hardness. / Nagano, Takanori; Kawagoishi, Norio; Moriyama, Michihiko; Chen, Qiang; Nagashima, Etsuichi.
In: Zairyo/Journal of the Society of Materials Science, Japan, Vol. 56, No. 12, 01.12.2007, p. 1126-1132.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influence of shot peening on fatigue strength of maraging steels with different hardness
AU - Nagano, Takanori
AU - Kawagoishi, Norio
AU - Moriyama, Michihiko
AU - Chen, Qiang
AU - Nagashima, Etsuichi
PY - 2007/12/1
Y1 - 2007/12/1
N2 - In order to investigate the hardness dependence on the fatigue strengths for surface fracture and internal fracture, rotating bending fatigue tests were carried out for maraging steels using specimens with different hardness obtained by heat-treating at different under-aging conditions. Fatigue limit for surface fracture was evaluated in electro-polished specimens and the one for internal fracture was in shot-peened ones, where fatigue limits were defined as fatigue strengths at 107 cycles for surface fracture and 108 cycles for internal fracture, respectively. Fatigue limit for internal fracture increased with increase in hardness similar to the one for surface fracture. However, the proportional relationship between the fatigue limit and the hardness existed till higher hardness in the fatigue limit for internal fracture than in the one for surface fracture. This difference in the hardness dependence on fatigue limit was discussed from the viewpoint of the influence of humidity on the fatigue strength.
AB - In order to investigate the hardness dependence on the fatigue strengths for surface fracture and internal fracture, rotating bending fatigue tests were carried out for maraging steels using specimens with different hardness obtained by heat-treating at different under-aging conditions. Fatigue limit for surface fracture was evaluated in electro-polished specimens and the one for internal fracture was in shot-peened ones, where fatigue limits were defined as fatigue strengths at 107 cycles for surface fracture and 108 cycles for internal fracture, respectively. Fatigue limit for internal fracture increased with increase in hardness similar to the one for surface fracture. However, the proportional relationship between the fatigue limit and the hardness existed till higher hardness in the fatigue limit for internal fracture than in the one for surface fracture. This difference in the hardness dependence on fatigue limit was discussed from the viewpoint of the influence of humidity on the fatigue strength.
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UR - http://www.scopus.com/inward/citedby.url?scp=39749137624&partnerID=8YFLogxK
U2 - 10.2472/jsms.56.1126
DO - 10.2472/jsms.56.1126
M3 - Article
AN - SCOPUS:39749137624
VL - 56
SP - 1126
EP - 1132
JO - Zairyo/Journal of the Society of Materials Science, Japan
JF - Zairyo/Journal of the Society of Materials Science, Japan
SN - 0514-5163
IS - 12
ER -