Very high‐cycle fatigue behaviour of shot‐peened high‐carbon–chromium bearing steel

Fatigue and Fracture of Engineering Materials and Structures - Tập 25 Số 8-9 - Trang 813-822 - 2002
Kazuaki SHIOZAWA1, Liantao Lu1
1Department of Mechanical and Intellectual Systems Engineering, Toyama University, 3190 Gofuku, Toyama 930-8555, Japan

Tóm tắt

ABSTRACTEffect of shot‐peening on fatigue behaviour in the gigacycle regime was investigated in order to clarify the duplex S–N curve characteristics. Cantilever‐type rotary bending fatigue tests were performed in laboratory air at room temperature by using hourglass‐shaped specimens of high‐carbon–chromium bearing steel, JIS SUJ2. Fatigue crack initiation site changed from the surface of untreated specimen to the subsurface of the specimen because of hardening and compressive residual stress with shot‐peening in the region of high‐stress amplitude. On the other hand, no difference in fatigue life controlled by the subsurface crack initiation between untreated specimen and shot‐peening one was observed in high‐cycle region. It was suggested that the S–N curve corresponding to the internal fracture mode is inherent in the material, as compared with the S–N curve of surface fracture mode, which is affected by surface conditions, environmental conditions and so on. Subsurface crack initiation and propagation behaviour were discussed under the detailed measurement of crack initiation area and shape of the fish‐eye fracture surface.

Từ khóa


Tài liệu tham khảo

10.1046/j.1460-2695.1999.t01-1-00185.x

10.1046/j.1460-2695.1999.00187.x

10.2472/jsms.48.1112

10.1016/S0142-1123(98)00028-0

10.1046/j.1460-2695.1999.00206.x

10.2472/jsms.46.1396

Sakai T. M., 1999, Fatigue ‘99, 573

10.2472/jsms.49.779

10.1299/kikaia.65.2504

Sakai T., 2001, Characteristic S–N property of high carbon chromium bearing steel in ultra‐wide life region under rotating bending, Mat. Sci. Res. Int., 41

10.1299/kikaia.55.45

10.1299/kikaia.52.847

10.2472/jsms.38.1128

10.1016/B978-008043011-9/50005-3

10.1299/kikaia.59.1001

10.2472/jsms.47.1216

Shiozawa K., 1996, Crack initiation and small fatigue crack growth behaviour of beta Ti−15V−3Cr−3Al−3Sn alloy, Fatigue, 96, 301

10.1299/kikaia.64.2528

Ruppen J. Bhowal P. Eylon D.andMcEvily J.(1979)On the process of subsurface fatigue crack initiation in Ti−6Al−4V ASTM STP 675 (Edited byJ. T.Fong). pp.47–68.

10.1016/0036-9748(83)90385-X

Adachi S., 1985, Influence of microstructure and mean stress on fatigue strength of Ti−6Al−4V, Proceedings of the 5th International Conference on Titanium Science and Technology, 4, 2139

10.2472/jsms.44.933

10.2472/jsms.48.1095

Shiozawa K., 2000, Fracture Mechanics: Applications and Challenges

Lu L., 2001, Characteristics of S–N curve and subsurface crack initiation behavior of high strength bearing steel in gigacycle fatigue, Mater. Sci. Res. Int., 35

10.1046/j.1460-2695.2001.00459.x

Murakami Y.(1993)Metal Fatigue: Effect of Small Defects and Nonmetallic Inclusions.Yokendo Tokyo (in Japanese).

10.1299/kikaia.54.688

Murakami Y., 1992, Stress Intensity Factor Handbook., 734

Thông tin
Thông tin xuất bản

Fatigue and Fracture of Engineering Materials and Structures

Tập 25 Số 8-9

813-822

Thông tin tác giả