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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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.
|Uncontrolled Keywords:||Higher harmonics; Maraging steel; Precipitation kinetics; Ultrasonic; Nonlinear|
|Divisions:||Material Science and Technology|
|Deposited By:||INVALID USER|
|Deposited On:||19 Oct 2009 15:45|
|Last Modified:||17 Sep 2012 15:29|
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