Higher harmonic analysis of ultrasonic signal for ageing behaviour study of C-250 grade maraging steel

被引：56

作者：

Metya, Avijit ^{[1
]}

Ghosh, M. ^{[1
]}

Parida, N. ^{[1
]}

Sagar, S. Palit ^{[1
]}

机构：

[1] Natl Met Lab, Div Mat Sci & Technol, Jamshedpur 831007, Bihar, India

来源：

NDT & E INTERNATIONAL | 2008年 / 41卷 / 06期

关键词：

higher harmonics; maraging steel; precipitation kinetics; ultrasonic; nonlinear;

D O I：

10.1016/j.ndteint.2008.01.008

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 I 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. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：484 / 489

页数：6

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