Micromechanical Testing of Fracture Initiation Sites in Welded High-Strength Low-Alloy Steel
| Autor: | Christian Thaulow, Bjørn Rune Sørås Rogne, Afrooz Barnoush |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Austenite
High-strength low-alloy steel Materials science Dual-phase steel Bainite Metallurgy technology industry and agriculture Metals and Alloys engineering.material Condensed Matter Physics Compression (physics) Microstructure Mechanics of Materials Martensite engineering Deformation (engineering) |
| Zdroj: | Metallurgical and Materials Transactions A. 45:1996-2003 |
| ISSN: | 1543-1940 1073-5623 |
| DOI: | 10.1007/s11661-013-2168-y |
| Popis: | Micropillar compression tests were performed on martensite (M) and retained austenite (A) containing constituents formed in high-strength low-alloy steel after simulated thermal weld heat treatment. Due to the complicated fine microstructure of the constituent, the resulted stress–strain curves were further analyzed by considering the post-mortem scanning electron micrographs and the morphology of the deformation of the pillars. It was possible to obtain relevant data for the uniaxial stress–strain behavior of the M–A constituent in the studied steel. Microvickers measurements, which were converted to macroscopic yield stress by empirical relations, were compared with the micropillar compression test results. Comparison showed that these empirical relations are overestimating the obtained mechanical properties of the M–A constituents. |
| Databáze: | OpenAIRE |
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