TY - JOUR

T1 - Non‐Destructive and Mechanical Characterization of the Bond Quality of Co‐Extruded Titanium‐Aluminum Profiles

AU - Mohnfeld, Norman

AU - Dewidar, Ahmed

AU - Qarbi, Karim

AU - Wester, Hendrik

AU - Schäfke, Florian Patrick

AU - Verschinin, Alexej

AU - Maier, Hans Jürgen

AU - Barton, Sebastian

AU - Klose, Christian

AU - Uhe, Johanna

N1 - Publisher Copyright: © 2024 The Author(s). Advanced Engineering Materials published by Wiley-VCH GmbH.

PY - 2024/11/13

Y1 - 2024/11/13

N2 - The transportation industry aims to improve energy efficiency and reduce CO 2 emissions, with a focus on reducing vehicle mass. A key method involves advanced lightweight construction techniques using materials like aluminum alloys. Research is concentrated on developing processes to combine different materials into reinforced hybrid components, such as aluminum and titanium. This study focuses on the lateral angular co-extrusion (LACE) process to produce hybrid hollow profiles of EN AW-6082 and Ti6Al4V, investigating the impact of the thermomechanical processing during extrusion and heat treatment (HT) on the resulting bond quality and material properties. Various HT routes are tested to see their impact on intermetallic phase formation, longitudinal weld seams, and bonding strength. Mechanical testing evaluates the tensile strength of the joining zone, while nondestructive ultrasonic testing (UT) assesses joining zone integrity and poor bonding detection. Results indicate that HT parameters significantly influence the bond quality and mechanical properties of hybrid profiles. UT data shows a strong correlation with tensile strength and intermetallic phase growth, providing a nondestructive way to evaluate bond quality. This study highlights the potential of LACE processes and optimized HT strategies to improve the performance and reliability of aluminum–titanium hybrid components.

AB - The transportation industry aims to improve energy efficiency and reduce CO 2 emissions, with a focus on reducing vehicle mass. A key method involves advanced lightweight construction techniques using materials like aluminum alloys. Research is concentrated on developing processes to combine different materials into reinforced hybrid components, such as aluminum and titanium. This study focuses on the lateral angular co-extrusion (LACE) process to produce hybrid hollow profiles of EN AW-6082 and Ti6Al4V, investigating the impact of the thermomechanical processing during extrusion and heat treatment (HT) on the resulting bond quality and material properties. Various HT routes are tested to see their impact on intermetallic phase formation, longitudinal weld seams, and bonding strength. Mechanical testing evaluates the tensile strength of the joining zone, while nondestructive ultrasonic testing (UT) assesses joining zone integrity and poor bonding detection. Results indicate that HT parameters significantly influence the bond quality and mechanical properties of hybrid profiles. UT data shows a strong correlation with tensile strength and intermetallic phase growth, providing a nondestructive way to evaluate bond quality. This study highlights the potential of LACE processes and optimized HT strategies to improve the performance and reliability of aluminum–titanium hybrid components.

KW - EN AW-6082-Ti6Al4V components

KW - heat treatment

KW - lateral angular co-extrusion

KW - mechanical testing

KW - ultrasonic testing

UR - http://www.scopus.com/inward/record.url?scp=85208920494&partnerID=8YFLogxK

U2 - 10.1002/adem.202401716

DO - 10.1002/adem.202401716

M3 - Article

JO - Advanced engineering materials

JF - Advanced engineering materials

SN - 1438-1656

ER -