Metya, Avijit Kumar and Ghosh, M and Parida, N and Palit Sagar, S (2008) Higher harmonic analysis of ultrasonic signal for ageing behaviour study of C-250 grade maraging steel. NDT & E International, 41 (6). pp. 484-489.
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Abstract
Higher order harmonic analysis of ultrasonic signal has been applied to study the precipitation kinetics of 18Ni maraging steel. The material has been solution annealed (SA) at a temperature of 1088 K for 1 h and then air quenched. Ageing of SA materials have been done at 728 K for different durations of 10 min to 100 h and air cooled. It has been found that the measurement parameter of this new technique increases with the formation of finer precipitates at the initial stage of ageing till 12 h and then decreases at longer holding time with the coarsening of precipitates.
| Item Type: | Article |
|---|---|
| Official URL/DOI: | http://dx.doi.org/10.1016/j.ndteint.2008.01.008 |
| Uncontrolled Keywords: | Higher harmonics; Maraging steel; Precipitation kinetics; Ultrasonic; Nonlinear |
| Divisions: | Material Science and Technology |
| ID Code: | 140 |
| Deposited By: | INVALID USER |
| Deposited On: | 19 Oct 2009 15:45 |
| Last Modified: | 17 Sep 2012 15:29 |
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