Results 41 to 50 of about 947 (168)

The Post-forging Heat Treatment Process of 9Cr Martensitic Heat-resistant Steel [PDF]

Teshugang
9Cr martensitic heat-resistant steel is an important candidate material for ultra-supercritical steam turbine rotors. Due to the large size of the rotor forgings， there is a greater tendency for microstructure inheritance.
Li Hongmei, Huo jie, Li Xiao, Nie Yihong, Zhu Lin   +4 more
doaj   +2 more sources

Creep deformation of austenitic steels at medium and low temperatures

Cryogenics, 1999
Abstract An austenitic steel used as a structural material of a superconducting magnet undergoes creep deformation and stress relaxation even at medium and low temperatures. Small plastic and creep strains in eight austenitic steels and a low-alloy steel were measured in the temperature range from 4 to 573 K. Every steel including the low-alloy steel
USAMI, Saburo, MORI, Takanobu
openaire   +2 more sources

Influence of Heat Treatment and Scan Rotation on the Microstructure of Hot Work Tool Steel Manufactured using Laser Powder Bed Fusion

steel research international, EarlyView.
The study investigates the influence of heat treatment and scan rotation on the microstructure of a modified H13 tool steel manufactured using laser powder bed fusion. Key findings include the refinement of prior austenite grains (PAGs) due to recrystallization and carbide pinning, and the significant impact of scan rotation on the size distribution of
Negar Panahi, Fengxiang Lin, Christos Oikonomou, Mikael Grehk   +3 more
wiley   +1 more source

Additive Manufacturing of Hot‐Work Tool Steel by In Situ Alloying Using Laser Powder Bed Fusion and Directed Energy Deposition—Strategies to Improve Chemical Homogeneity

steel research international, EarlyView.
To support future alloy development a powder mixture is processed by laser additive manufacturing. The powder mixture containing Mo‐ and W‐rich tracers is processed by powder bed fusion using single and double laser exposure and by directed energy deposition which provides drastically enlarged melt pools.
Felix Großwendt, Sebastian Weber, Jonathan Lentz   +2 more
wiley   +1 more source

Investigations on Austenitization Parameters Influencing Wear Behavior Within Hot Stamping [PDF]

, 2014
Nowadays, light weight design of the body in white is achieved by manufacturing structural components out of high strength steel grades. Due to the increase of materials tensile strength, a reduction of sheet thickness of the component is possible to ...
Wieland, Michael, Merklein, Marion
core   +1 more source

A thermo-metallurgical-mechanical model for microstructure evolution in laser-assisted robotic roller forming of ultrahigh strength martensitic steel

Journal of Materials Research and Technology, 2023
Laser-assisted robotic roller forming (LRRF) apparatus and process were developed to bend a plate to form a straight channel for ultrahigh strength steel MS1300.
Yi Liu, Jincheng Wang, Wayne Cai, Blair E. Carlson, Junhe Lian, Junying Min   +5 more
doaj   +1 more source

A Comparative Study of Directed Energy Deposition‐Arc and Casting: Enhancing Mechanical and Thermal Properties of Hot‐Work Tool Steels

steel research international, EarlyView.
The study investigates the influence of DED‐Arc/M versus casting on the microstructure and material properties of X40CrMoV5‐1 (AISI H13) hot‐work tool steel. DED‐Arc/M yields finer microstructures, superior mechanical strength, and ductility, but slightly reduced thermal conductivity.
Ulf Ziesing, Aaron Berger, Hendric Schaefer, Sebastian Weber, Jonathan Lentz   +4 more
wiley   +1 more source

Alloy Qualification for Producing Quench and Tempered Plate Steels with Extra‐Heavy Gage

steel research international, EarlyView.
This study develops alloy concepts for ultraheavy steel plates (>100 mm) with ≥690 MPa yield strength. Through dilatometry and Jominy testing, the effects of Mo, Ni, and B on hardenability are quantified. A synergy between 0.5% Mo and 0.5%–1.0% Ni ensures core strength at low cooling rates, while boron microalloying suppresses ferrite and promotes ...
Xabier Azpeitia, Unai Mayo, Nerea Isasti, Eric Detemple, Hardy Mohrbacher, Pello Uranga   +5 more
wiley   +1 more source

High-temperature quality of accelerated spheroidization on SUP9 leaf spring to enhance machinability

Heliyon, 2018
The high temperature on the austenitization showed the varied results in the fast spheroidization in high carbon leaf spring steel SUP9/55CrMnA. The heating temperature was held for 15 minutes in the austenitization temperature at 800, 850, and 900 °C ...
Hendri Chandra, Diah Kusuma Pratiwi, Muhammad Zahir   +2 more
doaj   +1 more source

HWTS 50 Tool Steel Tailored for Laser Powder Bed Fusion: Sliding Wear of Bare Surfaces and Nitriding Response in Comparison with 18Ni300 and AISI H13

steel research international, EarlyView.
This work investigates the wear resistance and nitriding behavior of PBF‐LB/M‐processed Osprey HWTS 50, a lean hot work tool steel. Three heat treatment conditions are compared to conventional wrought H13, H11, and PBF‐LB/M 18Ni300. The study highlights HWTS 50's enhanced nitrogen diffusion, deeper nitriding hardness depth, and comparable or improved ...
Jonathan Hann, Giorgia Lupi, Sylvain Dossin, Riccardo Casati, Mandanà Moshiri, Arne Röttger, Faraz Deirmina   +6 more
wiley   +1 more source