Browsing NTNU Open by Author "Lu, Feng"
Now showing items 1-6 of 6
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An improved modelling framework for strength and work hardening of precipitate strengthened Al–Mg–Si alloys
Lu, Feng; Sunde, Jonas Kristoffer; Marioara, Calin Daniel; Holmestad, Randi; Holmedal, Bjørn (Journal article; Peer reviewed, 2022)A modelling framework for the strength and work hardening contributions in age hardened Al–Mg–Si alloys is presented. The modelling work is based on transmission electron microscopy (TEM) measurements of the needle-shaped ... -
Linking mechanical properties to precipitate microstructure in three Al-Mg-Si(-Cu) alloys
Sunde, Jonas Kristoffer; Lu, Feng; Marioara, Calin Daniel; Holmedal, Bjørn; Holmestad, Randi (Peer reviewed; Journal article, 2021)The mechanical properties of age hardenable Al alloys depend strongly on the precipitate microstructure. This work has investigated the relationship between properties such as strength and ductility and the distribution ... -
A Robust Image Processing Algorithm for Optical-Based Stress–Strain Curve Corrections after Necking
Lu, Feng; Manik, Tomas; Andersen, Ida Lægreid; Holmedal, Bjørn (Peer reviewed; Journal article, 2021)To determine the stress–strain curve of a ductile material up to the fracture from a tensile test, the necking contour is measured by an optical measurement technique. The radius of the minimal cross-sectional area and the ... -
Stress corrections after necking using a two-parameter equation for the radius of curvature
Lu, Feng; Manik, Tomas; Holmedal, Bjørn (Peer reviewed; Journal article, 2021)Uniaxial tensile tests were conducted at room temperature, 100 °C and 150 °C, for obtaining necking-corrected stress–strain curves until fracture. The necking correction is based on specimen contours estimated from images ... -
Stress-strain relations for age hardened AlMgSi alloys, measured with necking corrections and modelled based on TEM characterization
Lu, Feng (Doctoral theses at NTNU;2021:182, Doctoral thesis, 2021)Age hardening Al-Mg-Si(-Cu) alloys, like other aluminium alloys, are increasingly utilized due to the combination of cost-saving, easy fabrication, and good mechanical properties. Yield strength and work hardening are ... -
The Effect of Exposure to Elevated Temperature on the Mechanical Properties of age hardenable AlMgSiCu-Alloys
Andersen, Ida Lægreid (Master thesis, 2019)Med et økt behov for lette, sterke materialer for bilindustrien, kommer også et økt behov for kunnskap om de mekaniske egenskapene til disse materialene. Det er godt kjent at utherdbare aluminiumlegeringer har høy styrke ...