Results 71 to 80 of about 8,799 (220)

Precipitation Versus Partitioning Kinetics during the Quenching of Low-Carbon Martensitic Steels [PDF]

, 2020
Low-carbon, low-alloy steels undergo auto-tempering and carbon partitioning to austenite during quenching to martensite. The microstructures of two such steels quenched at two cooling rates have been evaluated using electron microscopy to characterise ...
Antti Jarvenpää, Kömi, Jukka, Porter, David, Shashank Ramesh Babu, Jaskari, Matias, Jukka Kömi, Thomas Paul Davis, Jarvenpää, Antti, Matias Jaskari, David Porter, Babu, Shashank Ramesh, Davis, Thomas Paul   +11 more
core   +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

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

Influence of Higher Tramp Element Level on the Weldability of Automotive Steels

steel research international, EarlyView.
The use of green recycled steels is constantly expanding in the automotive industry. The increase in tramp elements resulting from the recycling of steel is problematic. Tramp elements can lead to a negative influence on the weldability. To understand the influence, the welding properties of three green steels are characterized. The potential limits of
Elias Gebhard Vogt, Patrick Veyel, Lars Gebel, Christian Meyer, Robert Thomas, Michael Thomas, Christoph Herrmann   +6 more
wiley   +1 more source

Desenvolvimento de procedimento de reparo por soldagem em aços inoxidáveis martensíticos, com metal de adição similar sem TTP / [PDF]

, 2000
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.Este trabalho analisa a aplicabilidade de técnicas de soldagem de reparo sem tratamento térmico posterior (TTP) ao aço inoxidável martensítico macio tipo CA-6NM e ...
Pereira, Aldo Santos
core  

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

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

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

Quenching and partitioning - a new steel heat treatment concept [PDF]

, 2011
Steel continues to be one of the primary materials in use today, however, even after 200 years of published research, innovative methods are being discovered and exploited to produce steel with enhanced properties.
Bigg, Timothy David
core  

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