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The impact of hydrogen on the formability of AHSS in Nakajima tests
AIP Conference Proceedings, 2016The application of Advanced High Strength Steels (AHSS) in the design of automotive body-in-white structures meets the requirement of light weight construction. The susceptibility to Hydrogen Embrittlement however, limits the wide application of steel grades over 1000 MPa.
Qi Gao +4 more
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Pre-Forming Effects on AHSS Edge Cracking
AIP Conference Proceedings, 2011Edge cracking in advanced high strength steels (AHSS) is a significant failure mode in many sheet metal stamping processes. Edge pre‐forming into a wave (or scallop) shape is a common technique used in conventional steels to gather material in high edge stretch regions in preparation for the subsequent edge stretch process.
Xiaoming Chen, Ke Chen, Lorenzo Smith
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Optimized AHSS Structures for Vehicle Side Impact
SAE International Journal of Materials and Manufacturing, 2012<div class="section abstract"><div class="htmlview paragraph">Advanced high strength steels (AHSS) have been widely accepted as a material of choice in the automotive industry to balance overall vehicle weight and stringent vehicle crash test performance targets.
Guofei Chen, Ming F. Shi, Tau Tyan
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Fracture Modeling of AHSS in Component Crush Tests
SAE International Journal of Materials and Manufacturing, 2011<div class="section abstract"><div class="htmlview paragraph">Advanced High Strength Steels (AHSS) have been implemented in the automotive industry to balance the requirements for vehicle crash safety, emissions, and fuel economy. With lower ductility compared to conventional steels, the fracture behavior of AHSS components has to be ...
Guofei Chen, Ming F. Shi, Tau Tyan
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Development of Empirical Shear Fracture Criterion for AHSS
SAE International Journal of Materials and Manufacturing, 2010<div class="section abstract"><div class="htmlview paragraph">The conventional forming limit curve (FLC) has been widely and successfully used as a failure criterion to detect localized necking in stamping. However, in stamping advanced high strength steels (AHSS), under certain circumstances such as stretching-bending over a small die ...
Hua-Chu Shih +3 more
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Properties controlling the bend-assisted fracture of AHSS
International Journal of Plasticity, 2015Abstract Bend-assisted fracture, also commonly called shear fracture, is the splitting of metal sheets during forming in tight-bending regions. It has been shown to be predominantly a result of plastic localization for most advanced high strength steels (AHSS). Such fractures are poorly predicted by typical industrial methods involving finite element
Lee, J +6 more
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A Comprehensive Study of Hole Punching Force for AHSS
SAE Technical Paper Series, 2018<div class="section abstract"><div class="htmlview paragraph">The elevated strength of advanced high strength steels (AHSS) leads to enormous challenges for the sheet metal processing, one of which is hole punching operation. The total tonnage must be estimated at each trimming stage to ensure successful cutting and protect the press ...
Chao Pu +7 more
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Non-metallic Particles Benefit or Burden for AHSS?
2018This paper describes a Tata Steel approach to investigate the production of new AHSS grades in relation to non-metallic inclusions. The work includes thermodynamic and phase modelling, as well as fractography and postmortem analyses on a sample from a newly developed cracking simulator.
Gert Abbel, Begoña Santillana
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Third Generation of AHSS: Microstructure Design Concepts
2009In recent years there has been an increased emphasis on the development of new advanced high strength sheet steels (AHSS), particularly for automotive applications. Descriptive terminology has evolved to describe the “First Generation” of AHSS, i.e. steels that possess primarily ferrite-based microstructures, and the “Second Generation” of AHSS, i.e ...
David K. Matlock, John G. Speer
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