Badaruddin, Mohammad and Sugiyanto, Sugiyanto and Herry, Wardono and Andoko, Andoko and Chaur, Jeng Wang and Abu, Khalid Rivai (2019) Improvement of low-cycle fatigue resistance in AISI 4140 steel by annealing treatment. andoko.ft@um.ac.id, 125. pp. 406-417. ISSN 0142-1123
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Abstract
The low-cycle fatigue (LCF) behaviour of AISI 4140 steel under annealed and as-received conditions was investigated at room temperature. The annealing treatment causes a marked decrease in mechanical strength but an increase in plastic energy and ductility. The annealing treatment of AISI 4140 steel significantly increases the LCF resistance of the material. In addition, the steel exhibits a transitional behaviour from initial cyclic softening to stable cyclic hardening with increasing strain amplitude. By contrast, the as-received AISI 4140 steel undergoes progressive cyclic softening until failure. Microstructural changes induced in the annealed steel cause near-Masing-type behaviour at low and high strain amplitudes. The enhancement of the LCF resistance of the annealed steel is attributed to the high magnitude of the compressive stress, which is dependent on the applied strain amplitude. A good correlation of the total failure cycles with plastic strain and elastic strain provides a precise equation model for predicting the LCF life of annealing-treated AISI 4140 steel.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AISI 4140 steel, annealing treatment, low-cycle fatigue, near-Masing behaviour, cyclic hardening |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Fakultas Teknik (FT) > Prodi Teknik Mesin |
| Depositing User: | MOHAMMAD B |
| Date Deposited: | 29 Apr 2019 08:19 |
| Last Modified: | 29 Apr 2019 08:19 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/11343 |
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