Results 261 to 270 of about 2,449 (297)
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Bake-partitioning in a press-hardening steel
Scripta Materialia, 2019Abstract Bake-partitioning, a process integrating paint-baking of car-body assembling to induce carbon partitioning into austenite, has been proposed for enhancing the ductility of press-hardening steels. Carbon is estimated to diffuse a maximum distance of 2.7 nm in austenite at 170 °C for 20 min.
Z.R. Hou +4 more
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Characterization of the Bendability of Press‐Hardened 22MnB5 Steel
steel research international, 2014The bendability of press‐hardened 22MnB5 steel was used as evaluation criterion to assess the ability of a press‐hardened part to deform plastically in side impact crash conditions. The initiation sites of crack initiating shear bands during the bending operation of press‐hardened 22MnB5 steel were found to be formed by surface roughening.
Won Seok Choi, De Cooman, BC
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Hydrogen Embrittlement Evaluation and Prediction in Press‐Hardened Steels
steel research international, 2023The application of press‐hardened steels (PHSs) in automotive body‐in‐white components using the hot‐stamping technique is growing thanks to its impressive strength and formability. Unfortunately, hydrogen embrittlement (HE), an issue that generally exists in high‐strength steels, impedes the PHSs rising application trend by causing catastrophic ...
Zuoheng Cao +7 more
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Notch Shear Cutting of Press Hardened Steels
Key Engineering Materials, 2015Nowadays, lightweight design is a relevant issue in the automotive industry and in the field of electric mobility. The utilization of Press Hardened Components (PHC) made of manganese-boric steels enable weight saving through the reduction of the sheet metal thickness with sufficient component reliability.
Martin Feistle +3 more
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Physical Simulation of Press Hardening of TRIP Steel
2018Deformation-induced martensitic transformation is used for improving mechanical properties of AHS steels which contain metastable retained austenite. TRIP steels are one of the categories that fall into this group. Their microstructures consist of proeutectoid ferrite, bainite, and metastable retained austenite.
Jirková, Hana +3 more
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Zinc Coated Press-Hardening Steel - Challenges and Solutions
SAE Technical Paper Series, 2015<div class="section abstract"><div class="htmlview paragraph">Press-hardening steels get more and more popular for body in white applications as an approach to meet the demands of passenger safety and CO<sub>2</sub> reduction. Unlike the larger part of the structure that is typically zinc coated, the majority of the PHS parts is
Thomas Kurz +4 more
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Effect of Al-Si Coating on Weldability of Press-Hardened Steels
Journal of Materials Engineering and Performance, 2020Resistance spot welding (RSW) of Al-Si-coated PHS was undertaken, and the effect of Al-Si coating on nugget formation and mechanical properties was investigated. Press-hardened steel (PHS) has long been applied to automotive body structure construction to support mass and corresponding greenhouse gas emission reductions.
RuiMing Chen +4 more
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1‐Step “Quenching and Partitioning” of the Press‐Hardening Steel 22MnB5
steel research international, 2016In recent years, high strength steels, particularly press‐hardening steel, have been more extensively employed for manufacturing safety‐relevant structural components in vehicle bodies. These applications require contrasting material properties such as extremely high strengths as well as high forming ductility.
Lars O. Wolf +3 more
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Tailored properties of a novelly-designed press-hardened 22MnMoB steel
Journal of Iron and Steel Research International, 2017A novel 22MnMoB hot stamping steel was designed. The continuous cooling transformation (CCT) measurement of the 22MnMoB steel showed that the ferrite-bainite microstructure could be obtained at cooling rates lower than 25 °C/s, and the complete martensite structure required the cooling rate higher than 30 °C/s.
Ming-bo Zhou +3 more
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Analysis of Laser and Resistance Spot Weldments on Press-Hardened Steel
Materials Science Forum, 2011For the manufacture of safe, lightweight vehicles, the demand for ultra-high-strength steel in the automotive industry is increasing. Although transformation-induced plasticity (TRIP) and dual-phase (DP) steels have a strength of under 1 GPa, boron-alloyed steel produced using the hot press forming process has a strength of more than 1500 MPa.
Min Jung Kang, Cheol Hee Kim
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