Metya, Avijit Kr and Ghosh, M and Parida, N and Balasubramaniam, Krishnan (2015) Effect of tempering temperatures on nonlinear Lamb wave signal of modified 9Cr–1Mo steel. Materials Characterization, 107. pp. 14-22.
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Abstract
Nonlinear Lamb wave was used to analyse the effect of tempering temperature on modified 9Cr–1Mo (P91) steel.
As-received material was normalized at 1080 °C and then tempered in temperature range of 600–850 °C with a
step size of 50 °C for 1.5 h and followed by furnace cooling. Nonlinear ultrasonic parameter β was determined at
each temperature using Lamb wave and correlated with microstructural characteristics like size of precipitate
and density of dislocation. It was seen that acoustic nonlinearity parameter (β) was sensitive towards
precipitate-matrix coherency strain, generated during tempering.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Nonlinear Lamb wave, Harmonics, Modified P91 steel, Tempering, Coherency strain |
| Subjects: | Materials Science > Materials Charcterization |
| Divisions: | Material Science and Technology |
| Depositing User: | Dr. Avijit Kr. Metya |
| Date Deposited: | 30 Jul 2015 12:26 |
| Last Modified: | 04 Apr 2018 06:24 |
| URI: | http://eprints.nmlindia.org/id/eprint/7281 |
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