Assessment of precipitation in alloy steel using nonlinear Rayleigh surface waves

Sebastian Thiele, Kathryn H. Matlack, Jin Yeon Kim, Jianmin Qu, James J. Wall, Laurence J. Jacobs

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nonlinear ultrasonic waves have shown to be sensitive to various microstructural changes in metals including coherent precipitates; these precipitates introduce a strain field in the lattice structure. The thermal aging of certain alloy steels leads to the formation of coherent precipitates, which pin dislocations and contribute to the generation of a second harmonic component. A precipitate hardenable material namely 17-4 PH stainless steel is thermally treated in this research to obtain different precipitation stages, and then the influence of precipitates on the acoustic nonlinearity parameter is assessed. Conclusions about the microstrucutural changes in the material are drawn based on the results from a nonlinear Rayleigh surface wave measurement and complementary thermo-electric power, hardness and ultrasonic velocity measurements. The results show that the nonlinear parameter is sensitive to coherent precipitates in the material and moreover that precipitation characteristics can be characterized based on the obtained experimental data.

Original languageEnglish (US)
Title of host publication40th Annual Review of Progress in Quantitative Nondestructive Evaluation - Incorporating the 10th International Conference on Barkhausen Noise and Micromagnetic Testing
PublisherAmerican Institute of Physics Inc.
Pages682-689
Number of pages8
ISBN (Print)9780735412118
DOIs
StatePublished - 2014
Externally publishedYes
Event40th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2013, Incorporating the 10th International Conference on Barkhausen and Micro-Magnetics, ICBM 2013 - Baltimore, MD, United States
Duration: Jul 21 2013Jul 26 2013

Publication series

NameAIP Conference Proceedings
Volume1581 33
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other40th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2013, Incorporating the 10th International Conference on Barkhausen and Micro-Magnetics, ICBM 2013
Country/TerritoryUnited States
CityBaltimore, MD
Period7/21/137/26/13

Keywords

  • Nonlinear Ultrasound
  • Precipitation
  • Ultrasonic Testing

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Assessment of precipitation in alloy steel using nonlinear Rayleigh surface waves'. Together they form a unique fingerprint.

Cite this