Microstructures, Forming Limit and Failure Analyses of Inconel 718 Sheets for Fabrication of Aerospace Components
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DOI: 10.1007/s11665-017-2547-4
Abstract: Abstract Recently, aerospace industries have shown increasing interest in forming limits of Inconel 718 sheet metals, which can be utilised in designing tools and selection of process parameters for successful fabrication of components. In the… read more here.
Keywords: inconel 718; microstructures forming; forming limit; strain ... See more keywords
Experimental and Numerical Determination of Hot Forming Limit Curve of Advanced High-Strength Steel
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DOI: 10.1007/s11665-017-2751-2
Abstract: Abstract This paper studied the hot formability of the advanced high-strength steel B1500HS. The hot Nakazima tests were conducted to obtain the forming limit curve (FLC), and the sheet temperatures were recorded to analyze temperature… read more here.
Keywords: high strength; strength steel; advanced high; forming limit ... See more keywords
Experimental study on the formability of AA6016 sheets pre-strained by rolling
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DOI: 10.1007/s12289-017-1363-6
Abstract: The effects of prestrain by rolling on the formability of AA6016 sheets in the biaxial stretching region are studied in this paper. An experimental program including formability experiments has been carried out for as-received and… read more here.
Keywords: formability; aa6016 sheets; formability aa6016; study ... See more keywords
Prediction of plane-strain specimen geometry to efficiently obtain a forming limit diagram by Marciniak test
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DOI: 10.1007/s42243-018-0062-y
Abstract: Plane-strain forming limit strain (also known as FLD0) is an important data point on a forming limit diagram (FLD). The effects of friction coefficients and material parameters on the specimen width associated with the FLD0… read more here.
Keywords: fld; geometry; plane strain; forming limit ... See more keywords
Improving the process forming limit considering forming defects in the transitional region in local loading forming of Ti-alloy rib-web components
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DOI: 10.1016/j.cja.2016.11.004
Abstract: Abstract The isothermal local loading forming technology provides a feasible way to form Ti-alloy large-scale rib-web components in aerospace and aviation fields. However, the local loading process forming limit is restricted by forming defects in… read more here.
Keywords: rib; process forming; forming limit; local loading ... See more keywords
Feasibility evaluation of failure models for predicting forming limit of metal foils
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DOI: 10.1016/j.cja.2019.09.002
Abstract: Abstract Forming limit of metal foil is an important index to evaluate its formability, and is of considerable significance to improve the quality of products. The ductile fracture (DF) behavior in microscale plastic deformation is… read more here.
Keywords: failure models; limit; feasibility; forming limit ... See more keywords
Fracture-based forming limit criteria for anisotropic materials in sheet metal forming
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DOI: 10.1016/j.ijplas.2016.04.014
Abstract: This paper is concerned with modeling of fracture-based forming limit criteria for anisotropic materials in sheet metal forming to predict the sudden fracture in complicated forming processes. The Lou–Huh ductile fracture criterion is modified using… read more here.
Keywords: fracture; fracture based; limit criteria; forming limit ... See more keywords
Computationally efficient predictions of crystal plasticity based forming limit diagrams using a spectral database
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DOI: 10.1016/j.ijplas.2018.01.007
Abstract: Abstract The present investigation focuses on the development of a fast and robust numerical tool for the prediction of the forming limit diagrams (FLDs) for thin polycrystalline metal sheets using a Taylor-type (full constraints) crystal… read more here.
Keywords: crystal plasticity; limit diagrams; spectral database; forming limit ... See more keywords
Forming limit prediction using an integrated model for 7075 aluminum alloy sheets at an elevated temperature
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DOI: 10.1016/j.ijsolstr.2020.06.030
Abstract: Abstract A methodology for incorporating a ductile fracture criterion into an improved Marciniak–Kuczynski model, which extends the original works to include planar anisotropy using the Barlat89 yield criterion, is proposed to predict the forming limit… read more here.
Keywords: elevated temperature; model; integrated model; forming limit ... See more keywords
Comparison of DIC Methods of Determining Forming Limit Strains
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DOI: 10.1016/j.promfg.2016.12.099
Abstract: Abstract Digital image correlation (DIC) techniques have been used in forming limit tests to obtain forming limit strains and many different methods have been proposed to determine the onset of localized necking in order to… read more here.
Keywords: localized necking; limit; onset localized; forming limit ... See more keywords
New tool concept for the isothermal determination of forming limit curves at temperatures above 600°C
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DOI: 10.1016/j.promfg.2018.12.064
Abstract: Abstract The topic of lightweight construction plays a central role in vehicle construction and in the sheet metal processing industry. Lightweight materials for body structures such as high-strength boron-manganese steels, which are formed at process… read more here.
Keywords: new tool; tool concept; forming limit; isothermal determination ... See more keywords