Results 81 to 90 of about 24,290 (250)

Method of Determining the Main Features of Magnetic Ferromagnetic Materials

The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2012
The purpose of this paper is to present a method for determining the main magnetic features such as magnetic induction B, magnetization M, the coercive magnetic field Hc, permeability μ, using hysteresis cycle chart.
Livia GHEORGHIEŞ, Ovidiu DIMA
doaj  

Revisiting rapid tempering of martensitic steel: the key role of tempering time over heating rate in carbide refinement and precipitation strengthening

Journal of Materials Research and Technology
Rapid tempering process can effectively improve the mechanical properties of martensitic steels such as strength, fracture toughness and impact toughness, which is mainly attributed to the promoted density and refined grain size of carbides. However, the
Baoqin Luo, Wenqi Mao, Yankang Zhao, Lijia Zhao, Hao Gao, Wenbin Ma, Shaolong Sheng, Nokeun Park, Pinaki Prasad Bhattacharjee, Qiang Wang   +9 more
doaj   +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

Superior stress relaxation resistance of 2.2 GPa martensitic steels and the effect of vanadium

Journal of Materials Research and Technology
For ultra-high-strength steels subjected to sustained loading, stress relaxation resistance is a core indicator determining their long-term service reliability.
Siming Huang, Jianping Ouyang, Liejun Li, Songjun Chen, Xianqiang Xing, Zhuoran Li, Haixiao Ye, Zhengwu Peng, Zhichao Luo   +8 more
doaj   +1 more source

Super-strong dislocation-structured high-carbon martensite steel

Scientific Reports, 2017
High-carbon martensite steels (with C > 0.5 wt.%) are very hard but at the same time as brittle as glass in as-quenched or low-temperature-tempered state.
Jun-jie Sun, Yong-ning Liu, Yun-tian Zhu, Fu-liang Lian, Hong-ji Liu, Tao Jiang, Sheng-wu Guo, Wen-qing Liu, Xiao-bing Ren   +8 more
doaj   +1 more source

Recycling End‐of‐Life Solid Oxide Cell Interconnect Assemblies into Commercial‐Grade AISI 304 Stainless Steels

steel research international, EarlyView.
This study validates a recycling pathway for converting interconnect assemblies from end‐of‐life SOC stacks into commercial‐grade AISI 304 steels. Using scrap‐based steelmaking operations, austenitic cast steels with <4.0% δ‐ferrite are successfully produced.
Jeraldine Lastam, Shine‐Od Mongoljiibuu, Alexander Specht, Daniel Grüner, Dmitry Sergeev, Urs A. Peuker, Michael Müller, Ruth Schwaiger   +7 more
wiley   +1 more source

Shear-mode Crack Initiation Behavior in the Martensitic and Bainitic Microstructures

MATEC Web of Conferences, 2018
Fully reversed torsional fatigue tests were conducted to elucidate the behaviour of shear-mode crack initiation and propagation in one martensitic and two bainitic steels.
Wada Kentaro, Yoshimura Soma, Yamamoto Tomoko, Ohkomori Yoshihiro, Matsunaga Hisao   +4 more
doaj   +1 more source

Long-term corrosion behavior of ODS-Eurofer in flowing Pb-15.7Li at 550°C

Nuclear Materials and Energy, 2016
Low activation ferritic-martensitic steels (RAFM-steels) are foreseen as structural materials in different blanket designs (HCLL, DCLL, WCLL) with Pb-15.7Li as breeding and partly also as cooling medium.
W. Krauss, S.-E. Wulf, J. Konys
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

Increasing the Reuse Potential of High‐Strength Steels by Extending the Fatigue Life through Surface Treatments

steel research international, EarlyView.
Surface reconditioning through mechanical and electrochemical polishing is shown to extend the fatigue life of predamaged 42CrMo4 steel by over 12 times. By removing ≈100 μm of surface material, surface‐driven fatigue damage is mitigated. This study introduces a reuse potential metric to evaluate fatigue recovery and support sustainable steel reuse. To
Ayush Shrivastava, Oguz Gulbay, Srinivasa Raghavan Raghuraman, Marion Kreins, Fabian Weber, Peter Starke, Alexander Gramlich, Ulrich Krupp   +7 more
wiley   +1 more source