Results 21 to 30 of about 4,412,327 (186)

Research progress on austenite grain growth and second-phase particle control technology in automotive gear steel

open access: yes工程科学学报, 2023
With the implementation of the global two-carbon policy, energy saving and CO2 emission reduction have become important developmental goals of the automobile manufacturing industry.
Zhipeng DAI   +4 more
doaj   +1 more source

A prediction model for austenite grain size distribution of casting slab in thermal rebound process: Considering α-ferrite precipitation and re-austenization

open access: yesJournal of Materials Research and Technology
The precipitation and re-austenitization behavior of α-ferrite during thermal rebound process of casting slab are crucial to the austenite grain size distribution. Accurately obtaining austenite grain size distribution plays an important guiding role for
Songyuan Ai   +6 more
doaj   +1 more source

Effects of Alloying Element and Heat Treatment on Mechanical Properties of Alloy Steels

open access: yesInternational Journal of Engineering Materials and Manufacture, 2023
The effects of Cr and Ni on three different types of steel with different carbon ratios under constant conditions such as the welding current 120A, voltage 80V, Diameter 10 mm and angle 60 degree was observed.
Umma Abdullahi
doaj   +3 more sources

Effect of Preheat Treatment Process on Austenite Grain Growth Behavior in Gear Steel SCr420H for High Temperature Carburization

open access: yesTeshugang, 2023
The effects of heating temperature and holding time on the austenite grain growth behavior of SCr420H gear steel samples with different AlN precipitation states were experimentally investigated.
Su Liang, Gong Shuo, Wang Fuming
doaj  

Microstructural path analysis of martensite burst

open access: yesMaterials Research, 2010
Modeling the martensite reaction requires reckoning with spatial aspects of the reaction. For that, we used formal kinetics, more specifically, the microstructural path method (MPM) to analyze the microstructure observed in a burst.
Paulo Rangel Rios   +1 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

Structure and Characteristics of Special Steel RL40 for Flexspline of Harmonic Reduction Gear

open access: yesTeshugang, 2021
The materials basic characteristics of structure, austenite grain coarsening and phase transformation point of RL40 steel for flexpline (/% :0.40C, 0.90Cr, l.
王洋   +5 more
doaj  

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

open access: yesAdvanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Austenite grain growth and hot deformation behavior in a medium carbon low alloy steel

open access: yesJournal of Materials Research and Technology, 2020
To examine the austenite grain growth behavior and kinetics under isothermal austenitization process in a low alloy medium carbon forged steel, heat treatments at different temperatures (1150, 1175, 1200, and 1260 °C) and times (5, 15, and 25 min) were ...
A. Chamanfar   +3 more
doaj   +1 more source

The effect of the austenite grain refinement on the tensile and impact properties of cast Hadfield steel [PDF]

open access: yesMaterials Research, 2018
This paper studied the effect of the austenite grain refinement on the tensile and impact properties of a cast Hadfield steel (12 % Mn, 1.2 %C and 0.65 % Si). The austenite grain refinement was obtained by hafnium inoculation.
Bianka Nani Venturelli   +2 more
doaj   +2 more sources

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