Correlation of Helium Bubble Microstructure to Changes of the Mechanical Properties in Austenitic Stainless Steels

Herbert Schroeder; Peter Batfalsky

doi:10.1520/STP87019850014

SYMPOSIA PAPER Published: 09 February 2018

STP87019850014

Correlation of Helium Bubble Microstructure to Changes of the Mechanical Properties in Austenitic Stainless Steels

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The high-temperature creep properties of solution-annealed and aged AISI Type 316 stainless steel were investigated, using different helium implantation and creep testing procedures. The helium bubble microstructure was determined in detail at different stages of the test procedures. Mechanical properties changes and microstructure were correlated and both were compared to existing models for high-temperature embrittlement. This comparison suggests that the experimental results are described best by the “gas-driven bubble growth” model for the cases of either continuous helium supply at high temperatures, that is “in-beam” creep test, or implantation at high temperatures without applied stress.

Author Information

Schroeder, Herbert

Institut für Festkörperforschung der Kernforschungsanlage Jülich, Jülich, DE

Batfalsky, Peter

Institut für Festkörperforschung der Kernforschungsanlage Jülich, Jülich, DE

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Details

Developed by Committee: E10

Pages: 745–756

DOI: 10.1520/STP87019850014

ISBN-EB: 978-0-8031-7679-9

ISBN-13: 978-0-8031-0592-8

Correlation of Helium Bubble Microstructure to Changes of the Mechanical Properties in Austenitic Stainless Steels

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