Pengaruh Perlakuan Panas Terhadap Laju Perambatan Retak Fatik Baja Tahan Karat Aisi 304
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 1997
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/21943/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=4822 |
Daftar Isi:
- The effect of a local heating due to a joint weld on the fatigue crack growth of the stainless steel AISI 304 has been investigated. The test was performed in a room temperature condition with a constant load amplitude and the load ratio was maintained to be 0.3. The load frequency was adjusted from 5 to 15 Hz depending on the performance of the testing machine used. Center cracked specimens were used'in this research and the initial crack was introduced by using EDM (Electro Discharge Machining). Those specimens were subsequently tested on the Shimadzu closed loop servo hydraulic testing machine and the increment of the crack length was monitored using two traveling microscopes. The results show that the effect of the local heating around the cracktip can reasonably increase, whereas the annealing process can decrease the fatigue crack growth rates. The observation on the microstructures shows that the size of crystal grains increase significantly after the annealing process.