Results 71 to 80 of about 93,926 (233)

Simulating the Effects of Substrate Pre-Heating on the Final Structure of Steel Parts Built by Laser Powder Deposition [PDF]

open access: yes, 2004
Tool steel parts built by laser powder deposition often present a heterogeneous distribution of properties caused by the complex structural transformations that occur during the deposition process.
Costa, L., Réti, T., Vilar, R.
core   +1 more source

Ultrahigh Strength with Suppressed Flow Instability at Liquid Helium Temperature via Coherent Nanoprecipitation in a Medium‐Entropy Alloy

open access: yesAdvanced Functional Materials, EarlyView.
It is demonstrated that severe lattice distortion and coherent nanoprecipitates overcome the strength–ductility dilemma and mitigate discontinuous plastic flow (DPF) at 4.2 K. Such microstructural design enhances both thermal and athermal stress components, leading to exceptional mechanical performance.
Min Young Sung   +11 more
wiley   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

open access: yesAdvanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz   +5 more
wiley   +1 more source

Ratio of Wheel/Rail Steel Hardness that Ensures Minimum Wear

open access: yesTribology in Industry, 2023
Different variants of the hardness of the wheel/rail friction pair were investigated to determine the optimal hardness range of the wheel/rail that ensures the minimum wear under selected test conditions.
Аzamat Kanayev   +2 more
doaj   +1 more source

Robust Bain distortion in the premartensite phase of platinum substituted Ni2MnGa magnetic shape memory alloy

open access: yes, 2017
The premartensite phase of shape memory and magnetic shape memory alloys (MSMAs) is believed to be a precursor state of the martensite phase with preserved austenite phase symmetry.
Chadov, S.   +10 more
core   +2 more sources

The concept of the habit plane and the phenomenological theories of the martensite transformation [PDF]

open access: yes, 1972
Three different interpretations of a martensite habit plane are in use: \ud \ud 1. (a) the plane of the plate of a plate-shaped crystal,\ud \ud 2. (b) a semi-coherent plane glissile interface,\ud \ud 3.
Klostermann, J.A.
core   +3 more sources

Additive Manufacturing of Negative Thermal Expansion Metamaterials Using Steels

open access: yesAdvanced Materials Technologies, EarlyView.
Architected lattices with tunable negative thermal expansion are fabricated from common steels using laser powder bed fusion metal additive manufacturing. Optimized multimaterial interfaces and geometry‐driven design produce robust, defect‐minimized structures that remain dimensionally stable up to 300 °C, enabling scalable solutions for thermal ...
Devashish Dubey   +4 more
wiley   +1 more source

Variant Selection in Fe-20Ni-1.8C under Bending

open access: yesCrystals, 2018
Variant selection is commonly observed in martensitic steels when a stress is applied to the material during transformation. Classically, the selection phenomenon is modelled considering the work of the shape strain in the applied stress field.
Annick P. Baur   +2 more
doaj   +1 more source

Crack propagation and strain-induced α’-martensite transformation in selective laser melting 316L stainless steels

open access: yesFrontiers in Materials, 2023
At present, in-situ monitoring of metal cracking and propagation is still a challenge. In this work, we used in-situ tensile tests with precast cracks of selective laser melting (SLM) and conventionally manufactured (CM) 316L stainless steels (SSs) to ...
Zhiheng Tan   +5 more
doaj   +1 more source

Dynamic Scenarios of the Formation of Martensite with the {110} Habits in the Ni50Mn50 Alloy [PDF]

open access: yes, 2019
Martensitic transformation B2–L10 in the ordered alloy Ni50Mn50, which occurs at comparatively high temperatures (980–920 K), is discussed with the use of dynamic concepts of the wave control of the threshold deformation.
Belosludtseva, E. S.   +5 more
core  

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