Making ultrastrong steel tough by grain-boundary delamination Article Swipe

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Materials science Toughening Fracture toughness Delamination (geology) Grain boundary Fracture (geology) Composite material Plasticity Toughness Austenite Fracture mechanics Metallurgy Microstructure Paleontology Subduction Tectonics Biology

Li Liu , Qin Yu , Z. Wang , Jon Ell , Mingxin Huang , Robert O. Ritchie ·

YOU? · · 2020 · Open Access · · DOI: https://doi.org/10.1126/science.aba9413 · OA: W3021373588

Strong and tough steel Ultrahard materials often do not have similarly impressive fracture toughness. Liu et al. discovered a processing route for medium manganese steel alloy in which ultrahigh strength accompanies high fracture toughness. The steel relies on both transformation-induced plasticity and delamination toughening to boost the fracture properties. The steel is composed of less expensive elements, making it a potentially inexpensive material attractive for structural applications. Science , this issue p. 1347