Prasad, Kartik ; Sarkar, Rajdeep ; Kumar, Vikas ; Rao, K. Bhanu Sankara ; Sundararaman, M. (2016) Influence of test temperature on cyclic deformation behavior of a near α titanium alloy Materials Science and Engineering A, 662 . pp. 373-384. ISSN 0921-5093
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Official URL: http://doi.org/10.1016/j.msea.2016.03.079
Related URL: http://dx.doi.org/10.1016/j.msea.2016.03.079
Abstract
Low cycle fatigue behavior of titanium alloy Timetal 834 has been studied at 300 °C, 450 °C and 600 °C under fully reversed constant total strain amplitudes (Δεt/2) ranging from 0.4% to 1.2%. The alloy exhibited initial cyclic softening followed by cyclic hardening at 450 °C for Δεt/2≥0.4% while at 300 °C and 600 °C, cyclic softening followed by cyclic stability was noticed in the cyclic stress response curves for Δεt/2>0.4%. Precipitate shearing was observed to be the micro-mechanism responsible for cyclic softening at all test temperatures. However, dislocation-dislocation and dislocation – solute interaction was observed to be the micro-mechanism responsible for cyclic hardening only at 450 °C. TEM observations revealed that the severity of planar slip is found to peak at 450 °C.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 133494 |
| Deposited On: | 29 Dec 2022 04:41 |
| Last Modified: | 29 Dec 2022 04:41 |
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