Browsing Engineering (Faculty of) by Subject "hot stamping"
Now showing items 1-8 of 8
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Characterization of Formability and Friction during Hot Stamping of Al-Si Coated Press Hardened Steel
(University of Waterloo, 2023-05-23)This thesis investigates the friction and formability characteristics of Al-Si coated press hardened steels (PHS) during direct hot stamping. The PHS grades examined were PHS1800 and PHS1500, with nominal ultimate tensile ... -
Characterizing the Constitutive Behaviour and Austenite Decomposition of an 1,800 MPa Press Hardenable Boron Steel
(University of Waterloo, 2024-02-02)The mechanical behaviour of a new 1,800 MPa strength grade of Al-Si coated, 37MnB5 press-hardenable steel, designated PHS 1800, was investigated under hot stamping conditions. Prior to mechanical testing, a novel heat ... -
Constitutive and Friction Characterization and Simulation of AA7075 Aluminum Alloy Sheet under Die Quenching Conditions
(University of Waterloo, 2022-10-31)This thesis investigates the die quench forming of AA7075 aluminum alloy sheet, including the constitutive and friction behaviour at elevated temperatures. Experiments examining characterization of friction behaviour and ... -
Developing and Improving a Thermometallurgical Model for 22MnB5 Steel in a Roller Hearth Furnace
(University of Waterloo, 2022-04-29)Ultra-high strength steel (UHSS) such as Al-Si coated 22MnB5 are commonly used in the hot forming die quenching (HFDQ) process to produce light-weight automotive parts while maintaining good crashworthiness. The steel blank ... -
Development of a Tailor-Welded Hot Stamped Side Frame Member
(University of Waterloo, 2020-01-10)This thesis investigates the application of hot stamped ultra-high strength steel (greater than 1000 MPa tensile strength) tailor-welded blanks in vehicle frontal crash energy management structures, as well as their potential ... -
Experimental Characterization and Numerical Modelling of the Interfacial Heat Transfer Coefficient in Hot Stamping of Al-Si Coated 22MnB5 Steel
(University of Waterloo, 2023-10-18)In automotive hot stamping of Al-Si coated 22MnB5 steel, the heat transfer coefficient (HTC) between the blank and die is crucial for predicting the mechanical properties of the as-formed part. While average HTCs associated ... -
Investigating the evolution of the aluminum-silicon coating on 22MnB5 steel during heating
(University of Waterloo, 2022-04-07)To combat greenhouse gas emissions and improve fuel economy, automotive manufacturers have searched for methods to reduce vehicle weight. As such, hot stamping has become an increasingly popular sheet metal forming technique, ... -
On the Development of Fold Initiator Patterns to Promote Progressive Folding of Hot Stamped Ultra-High Strength Axial Crush Structures
(University of Waterloo, 2021-06-21)The effect of fold initiator design on the performance of axial crush rails fabricated using ultra high strength steels (UHSS) is examined in a combined experimental-numerical-analytical study. Of particular interest is ...