Effect of shot peening process on the fatigue life of shot peened low alloy steel
Shot peening is well known as a surface deformation process which can induce compressive residual stresses into the subsurface of materials in order to improve the fatigue life. In this paper, the effects of the process conditions for both single and double shot peening on the fatigue life of AISI 4...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/89372 http://hdl.handle.net/10220/47702 |
| _version_ | 1826126531430187008 |
|---|---|
| author | Trung, Pham Quang Khun, Nay Win Butler, David Lee |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Trung, Pham Quang Khun, Nay Win Butler, David Lee |
| author_sort | Trung, Pham Quang |
| collection | NTU |
| description | Shot peening is well known as a surface deformation process which can induce compressive residual stresses into the subsurface of materials in order to improve the fatigue life. In this paper, the effects of the process conditions for both single and double shot peening on the fatigue life of AISI 4340 low alloy steel is investigated. The fatigue tests revealed that the shot peening process could significantly enhance the fatigue life of the treated components. However, a side effect of the process was an increase in surface roughness which was more prevalent under higher peening pressures and led to a reduction in the fatigue life. Therefore, to maximize the performance of the process, the peening parameters need to be carefully selected. Microstructure analysis of the shot peened parts indicated that the nucleation cracks or initiation cracks occurred in the subsurface at depths of 10–20 μm in the case of as-received samples but moved up to the free surface for the shot peened parts. |
| first_indexed | 2024-10-01T06:54:11Z |
| format | Journal Article |
| id | ntu-10356/89372 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:54:11Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/893722020-03-07T13:19:29Z Effect of shot peening process on the fatigue life of shot peened low alloy steel Trung, Pham Quang Khun, Nay Win Butler, David Lee School of Mechanical and Aerospace Engineering Fatigue Life DRNTU::Engineering::Mechanical engineering Shot Peening Shot peening is well known as a surface deformation process which can induce compressive residual stresses into the subsurface of materials in order to improve the fatigue life. In this paper, the effects of the process conditions for both single and double shot peening on the fatigue life of AISI 4340 low alloy steel is investigated. The fatigue tests revealed that the shot peening process could significantly enhance the fatigue life of the treated components. However, a side effect of the process was an increase in surface roughness which was more prevalent under higher peening pressures and led to a reduction in the fatigue life. Therefore, to maximize the performance of the process, the peening parameters need to be carefully selected. Microstructure analysis of the shot peened parts indicated that the nucleation cracks or initiation cracks occurred in the subsurface at depths of 10–20 μm in the case of as-received samples but moved up to the free surface for the shot peened parts. 2019-02-19T05:25:11Z 2019-12-06T17:24:02Z 2019-02-19T05:25:11Z 2019-12-06T17:24:02Z 2017 Journal Article Trung, P. Q., Khun, N. W., & Butler, D. L. (2018). Effect of shot peening process on the fatigue life of shot peened low alloy steel. Journal of Engineering Materials and Technology, 140(1), 011013-. doi:10.1115/1.4037525 0094-4289 https://hdl.handle.net/10356/89372 http://hdl.handle.net/10220/47702 10.1115/1.4037525 en Journal of Engineering Materials and Technology © 2018 ASME. All rights reserved. |
| spellingShingle | Fatigue Life DRNTU::Engineering::Mechanical engineering Shot Peening Trung, Pham Quang Khun, Nay Win Butler, David Lee Effect of shot peening process on the fatigue life of shot peened low alloy steel |
| title | Effect of shot peening process on the fatigue life of shot peened low alloy steel |
| title_full | Effect of shot peening process on the fatigue life of shot peened low alloy steel |
| title_fullStr | Effect of shot peening process on the fatigue life of shot peened low alloy steel |
| title_full_unstemmed | Effect of shot peening process on the fatigue life of shot peened low alloy steel |
| title_short | Effect of shot peening process on the fatigue life of shot peened low alloy steel |
| title_sort | effect of shot peening process on the fatigue life of shot peened low alloy steel |
| topic | Fatigue Life DRNTU::Engineering::Mechanical engineering Shot Peening |
| url | https://hdl.handle.net/10356/89372 http://hdl.handle.net/10220/47702 |
| work_keys_str_mv | AT trungphamquang effectofshotpeeningprocessonthefatiguelifeofshotpeenedlowalloysteel AT khunnaywin effectofshotpeeningprocessonthefatiguelifeofshotpeenedlowalloysteel AT butlerdavidlee effectofshotpeeningprocessonthefatiguelifeofshotpeenedlowalloysteel |