Observation of Phase Transformation in Laser Peening Process Using X-ray Free-Electron Laser
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- MIYANISHI Kohei
- RIKEN
Bibliographic Information
- Other Title
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- X 線自由電子レーザーを用いたレーザーピーニングにおける相変態の観察
Abstract
This article reviews our experimental investigation of the phase transformation process of 304 austenitic stainless steel (SUS304) in the laser peening process. An optical laser pump–X-ray free-electron laser probe in-situ time-resolved X-ray diffraction measurement reveals the formation process of α ′-martensite from γ -austenite of SUS304 under shock compression and release, which occur during the laser peening process. The result indicates that fast tensile strain rate deformation, arising from shock pressure release waves, drives a considerable amount of the transformation to transient ε -martensite from γ - austenite, where the transient ε -martensite acts as an intermediate phase of the transformation to α ′-martensite.
Journal
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- The Review of Laser Engineering
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The Review of Laser Engineering 49 (1), 17-, 2021
The Laser Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390018198841928192
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- ISSN
- 13496603
- 03870200
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed