Materials Letters: X, 2021 Phase transformation in hydrogenated iron during depressurization from several gigapascals was investigated through in-situ synchrotron radiation X-ray diffraction and post-mortem electron backscatter diffraction measurements. The hydrogenated iron under
Motomichi Koyama +4 more
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Hydrogenation treatment under several gigapascals assists diffusionless transformation in a face-centered cubic steel [PDF]
Scientific Reports, 2021 The use of hydrogen in iron and steel has the potential to improve mechanical properties via altering the phase stability and dislocation behavior. When hydrogen is introduced under several gigapascals, a stoichiometric composition of hydrogen can be ...
Motomichi Koyama +4 more
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Diffusionless transformation of soft cubic superstructure from amorphous to simple cubic and body-centered cubic phases [PDF]
Nature Communications, 2021 The arrangements of defect lines in liquid crystal blue phases provide promising templates for photonic crystals. Here Liu et al. investigate in detail how inter-phase transitions proceed, by intercepting nucleation with on-demand cross linking of a ...
Jie Liu +9 more
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Chemical Load-Induced Surface Nanocrystallization in Nitrided Martensitic Stainless Steel [PDF]
NanomaterialsSurface nanocrystallization is a critical approach for improving mechanical and functional properties of materials. Beyond conventional mechanical routes, chemical loading presents a promising pathway for nanocrystallization via interstitial-driven phase
Xu Yang, Honglong Che, Mingkai Lei
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Shape Memory Effect Driven by Diffusionless and Diffusional Transformations at Elevated Temperatures [PDF]
Успехи физики металлов, 2002 Several alloy systems can be selected for high-temperature shape-memory alloys, defined as alloys with stable reverse martensitic-transformation temperatures above 100°C.
G. S. Firstov, Yu. N. Koval, J. Van Humbeeck
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Pathway for a martensitic quartz–coesite transition [PDF]
Scientific ReportsAn atomistic pathway for a strain-induced subsolidus martensitic transition between quartz and coesite was found by computing the set of the smallest atomic displacements required to transform a quartz structure into a coesite structure.
Tim Schaffrinna +2 more
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Elemental partitioning-mediated crystalline-to-amorphous phase transformation under quasi-static deformation [PDF]
Nature CommunicationsThe transformation induced plasticity phenomenon occurs when one phase transforms to another one during plastic deformation, which is usually diffusionless.
Ge Wu +6 more
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Journal of Materials Research and Technology, 2023 The molecular dynamics (MD) calculation and experimental research methods were used to study the phase transition from onion-like carbon (OLC) with and without a diamond crystal core to nano-polycrystalline diamond (nPCD) under high temperature and high ...
Lifeng Dai +7 more
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Extremely rapid age hardening behavior in solution treated Ti-5Al-2Fe-3Mo [PDF]
MATEC Web of Conferences, 2020 To grasp age hardening and phase transformation behaviors in a β rich α+β type titanium alloy, Ti-5Al-2Fe-3Mo, during aging at 300-500°C after the solution treatment at high α+β temperature.
KUNIEDA Tomonori +2 more
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Development of High-Entropy Shape-Memory Alloys: Structure and Properties
Успехи физики металлов, 2023 Amongst functional materials, shape-memory alloys occupy a special place. Discovered in the beginning of 1960th in XX century, these alloys attracted quite an attention because of the possibility to restore significant deformation amounts at certain ...
G. S. Firstov, Yu. M. Koval, V. S. Filatova, V. V. Odnosum, G. Gerstein, and H. J. Maier
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