Results 131 to 140 of about 7,970 (297)

Interrupted quenching in high carbon steels for forgings

open access: yesMetalurgija, 2017
The present study is focused on analyzing the effect of the interrupted quenching followed by a partitioning process in a high carbon steel 0,50 % C, 1,50 % Mn, 0,40 % Si, 2,00 % Cr without significant contribution of Al.
G. Napoli   +4 more
doaj  

Optimization of Heat Treatment Process and Strengthening–Toughening and Mechanism for H13 Steel

open access: yesMetals
This study investigates H13 steel through Q-P-T (quenching–partitioning–tempering) heat treatment experiments, focusing on the effects of quenching and tempering temperatures on its microstructure and mechanical properties.
Yuzhong Wang   +5 more
doaj   +1 more source

Studi Eksperimental Pengaruh Variasi Temperatur Dan Waktu Penahanan Partitioning Pada Proses Quenching – Partitioning Baja JIS S45c Di Atas Temperatur Martensite Start [PDF]

open access: yes, 2017
Perlakuan panas merupakan salah satu cara untuk memperbaiki sifat mekanik dari material. Prinsip perlakuan panas pada baja adalah transformasi fasa austenite menjadi fasa lain.
Hafidh, Muhammad
core  

A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments

open access: yesAdvanced Materials, EarlyView.
The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal   +14 more
wiley   +1 more source

Effects of annealing and quenching temperature on microstructure evolution and mechanical properties in Fe-0.17C-2.10Mn-0.51Si steel

open access: yesMaterials & Design
The optimum mechanical properties of Fe-0.17C-2.10Mn-0.51Si steel are achieved by adjusting annealing and quenching temperatures. Annealing at 790 °C for 300 s, followed by quenching at 310 °C for 15 s and partitioning at 460 °C for 50 s, results in a ...
Panpan Yuan   +3 more
doaj   +1 more source

Studi Pengaruh Waktu Penahanan Quenching-Partitioning Terhadap Sifat Mekanik Dan Struktur Mikro Baja AISI 51B60 Dan Baja AISI 9260 Bekas [PDF]

open access: yes, 2017
Baja bekas pegas daun dimanfaatkan pande besi sebagai bahan baku membuat pisau dapur. Kualitas pisau dapur ditentukan oleh sifat mekaniknya yaitu kekerasan, ketangguhan, ketahanan aus, dan sifat tahan korosi.
Kusuma, Muhammad Hary
core  

Spin‐Split Edge States in Metal‐Supported Graphene Nanoislands Obtained by CVD

open access: yesAdvanced Materials, EarlyView.
Combining STM measurements and ab‐initio calculations, we show that zig‐zag edges in graphene nanoislands grown on Ni(111) by CVD retrieve their spin‐polarized edge states after intercalation of a few monolayers of Au. ABSTRACT Spin‐split states localized on zigzag edges have been predicted for different free‐standing graphene nanostructures.
Michele Gastaldo   +6 more
wiley   +1 more source

Atomistic Mechanisms Triggered by Joule Heating Effects in Metallic Cu‐Bi Nanowires for Spintronics

open access: yesAdvanced Materials, EarlyView.
Bi doped metallic Cu nanowires are promising for spintronics thanks to the stabilization of a giant spin Hall effect. However, heat resulting from current injection forces Bi to leave solution, forcing segregation into monoatomic decorations which evolve into coherent crystalline aggregates.
Alejandra Guedeja‐Marrón   +6 more
wiley   +1 more source

Lattice‐Matched 2D Template Enables Efficient Cesium Tin Halide Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Lattice‐matched 2D perovskite PEA2CsSn2I7 templates the out‐of‐plane growth of inorganic 3D γ‐CsSnI3 along the (110) plane, forming highly oriented 2D/3D tin halide perovskite heterostructures. With reduced trap states and mitigated δ‐phase impurities, the CsSnI3‐based solar cells achieve a power conversion efficiency of 15.27% and maintain stable ...
Hongzhe Anna Xu   +15 more
wiley   +1 more source

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