Results 271 to 280 of about 58,230 (310)

Usability Testing of Ultra High-Strength Steels

Volume 4: Advanced Manufacturing Processes; Biomedical Engineering; Multiscale Mechanics of Biological Tissues; Sciences, Engineering and Education; Multiphysics; Emerging Technologies for Inspection and Reverse Engineering; Advanced Materials and Tribology, 2012
New ultra high strength (UHS) steels have been developed in order to get advantages in machine design and construction. Following benefits can be obtained for example: - less material usage due to lighter constructions; - better payload and less fuel consumption in vehicle industry; - energy saving in ...
Jouko A. Heikkala, Anu J. Väisänen
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Laser welding of ultra high strength steels

Revue de Métallurgie, 2003
Due to their outstanding properties, high strength steels (HSS) are ever more required by the automotive industry. Indeed, high strength steels make it possible to reduce the overall weight of the vehicles. However, manufacturing of industrial parts may be hindered by the higher hardenability of these steels.
G. Restrepo Garcés, P. Verrier, O. Glaise, S. Boidin   +3 more
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Passive Laser Assisted Bending of Ultra-High Strength Steels

Advanced Materials Research, 2011
Formability of ultra-high strength steels is poor causing problems in bending and stretch forming. The target of this work was to improve the formability of ultra-high strength steel sheets by controlled local laser heat treatments. Three steel grades, a bainitic-martensitic 4 mm DQ960 and two martensitic WR500 with 6 mm and 10 mm thicknesses were ...
Mäntyjärvi Kari, Karjalainen Pentti, Järvenpää Antti   +2 more
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Applicability of the Master Curve Method to Ultra High Strength Steels

Volume 1B: Codes and Standards, 2015
Although Ultra High Strength Steels (UHSS) with nominal strengths up to 1500 MPa have been available on the market for many years, the use of these steels in the civil engineering industry is still rather uncommon. One critical point limiting the use of UHSS steels lies in their rather poorly documented fracture properties in relation to more ...
Wallin, Kim, Pallaspuro, Sakari, Karjalainen-Roikonen, Päivi, Suikkanen, Pasi   +3 more
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Fatigue strength prediction of ultra high strength steel butt‐welded joints

Fatigue & Fracture of Engineering Materials & Structures, 2012
ABSTRACTFirst, fatigue tests were performed on butt‐welded joints made of novel direct quenched ultra high strength steel with high quality welds. Two different welding processes were used: MAG and Pulsed MAG. The weld profiles, misalignments and residual stresses were measured, and the material properties of the heat‐affected zone were determined ...
T. NYKÄNEN, T. BJÖRK, R. LAITINEN
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The Low-Cycle Fatigue Strength of Laser-Welded Ultra-High-Strength Steel

Key Engineering Materials, 2011
The UUltra -high -strength (UHS) steels are used in booms, transport vechicles and other light weight structures. It is well -known that it is possible to achieve a strong weld statically, as the base material, by using laser welding as a weld method [1]. The design strength of the light weight structure is often rather high.
Mäntyjärvi Kari, Keskitalo Markku, Kiuru Toni Kalevi   +2 more
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Ultra High-Strength Maraging Steel

2013
Maraging steels are high-strength steels combined with good toughness. They are used particularly in aerospace and tooling applications. Maraging refers to the ageing of martensite, a hard microstructure commonly found in steels. Research on the kinetics of precipitate formation and austenite reversion in maraging steels has received great attention ...
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Bending Strength of Laser-Welded Sandwich Steel Panels of Ultra-High Strength Steel

Key Engineering Materials, 2018
The study was performed to investigate the bending resistance of laser-welded sandwich panels (Vf-core). The main aim of the study was to determine the effect of the tensile strength on bending strength of the panel structures. Panels were manufactured using an ultra-high strength (UHS) and low strength (LS) steels with yield strengths of 1200 and 200 ...
Mikko Hietala, Antti Järvenpää, Markku Keskitalo, Kari Mäntyjärvi   +3 more
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Development of Ultra-High Strength Steel Sheets with Tensile Strength of 980MPa

SAE Technical Paper Series, 2007
<div class="htmlview paragraph">The application of ultra-high strength steel sheets is one of the most important methods to achieve both weight reduction and crash safety of a vehicle. Ultra-high strength steel sheets are currently being applied to some parts in a vehicle body.
Nobuhiro Fujita, Toshiki Nonaka, Toshimasa Tomokiyo, Hirokazu Taniguchi, Koichi Goto, Kazumasa Yamazaki   +5 more
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Bending Fatigue Strength of WAAM Ultra-High-Strength Steel

Key Engineering Materials
This study investigates the bending fatigue strength of ultra-high-strength steel (UHS) steel manufactured using wire arc additive manufacturing (WAAM) technology. Hardness evaluations, conducted in the built direction, demonstrated a remarkable consistency with an average hardness of approximately 292 HV throughout the entire deposited component ...
Jaskari Matias, Rautio Timo, Järvenpää Antti, Keskitalo Markku, Hietala Mikko   +4 more
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