Actions for Acoustic Emission During Phase Transformation in Steel

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Acoustic Emission During Phase Transformation in Steel / GR. Speich, AJ. Schwoeble

Conference Author
Monitoring Structural Integrity by Acoustic Emission (1974 : Ft. Lauderdale, Fla.)
Published
West Conshohocken, Pa. : ASTM International, 1975.
Physical Description
1 online resource (19 pages) : illustrations, figures, tables
Additional Creators
Schwoeble, AJ., Speich, GR., American Society for Testing and Materials, and ASTM International
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Summary
Acoustic emission was monitored during phase transformations that occur during cooling in a wide variety of steels. Acoustic emission was generated during the formation of martensite but not during the formation of ferrite, bainite, or pearlite. This observation is consistent with the rapid, diffusionless, shear-like nature of martensite formation and the slow, diffusion-controlled growth of ferrite, bainite, or pearlite. The martensite start temperatures, and the temperature range of martensite formation determined by acoustic emission were in good agreement with those determined by metallographic or dilatometric methods. The intensity of acoustic emission generated during martensite formation decreased markedly as the carbon content of the steel decreased, becoming nearly undetectable in a maraging steel. This decrease in intensity correlates with a morphological change from large plate-shaped martensite units to smaller lath-shaped martensite units as the carbon content of the steel is decreased.
Dates of Publication and/or Sequential Designation
Volume 1975, Issue 571 (January 1975)
Subject(s)
Other Subject(s)
ISBN
0803105193
9780803105195
9780803146549 (e-ISBN)
Digital File Characteristics
text file PDF
Bibliography Note
Includes bibliographical references 27.
Other Forms
Also available in PDF edition.
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
Full text article also available for purchase.
Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1975. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details
Mode of access: World Wide Web.
Source of Acquisition
ASTM International PDF Purchase price USD25.
View MARC record | catkey: 27996313