Publications
Showing 50 results for Author: Yong Chae Lim
Sep, 2026
Journal
Corrosion Resistance of Lignin-Based Thermoplastic Adhesive-Bonded Aluminum Joints
Adhesive-bonded joints are essential for lightweight, multimaterial automotive structures. We developed a lignin-based thermoplastic adhesive with adhesion strength comparable to conventional epoxy adhesives (20–23 MPa), while offering exceptional durability, recyclability, and corrosion resistance. Unlike commercial epoxy adhesives requiring refrigerated storage, our adhe…
Aug, 2026
ORNL Report
NOVEL TIN-BASED WET COATING AND SOLID-STATE JOINING FOR BIPOLAR PLATE MANUFACTURING
Mar, 2026
Conference Paper
Friction Self-piercing Riveting Process for 3T Configuration of AA7075-AA7075-AA6022
Friction self-piercing riveting (F-SPR), as a solid-state joining process that generates frictional heat during the process, was utilized to join a 3 T configuration of low-ductility AA7075-AA7075-AA6022 sheets. A multi-step F-SPR process was employed to precisely control the mechanical interlocking and solid-state joining, ensuring a strong joint formation. With control o…
Mar, 2026
Conference Paper
Scale-Up of Friction Self-piercing Riveting Process for Multi-material Joints
A single-class joining process known as “friction self-piercing riveting (F-SPR)” has been developed for joining various low-ductility lightweight materials on a laboratory scale. The frictional heat generated during the F-SPR process improved local ductility, resulting in crack-free joints and robust mechanical performance. This innovative joining technology was further a…
Feb, 2026
Journal
Elucidating microstructural evolution and hardness variation across friction self-piercing riveted Al-7055 using synchrotron X-ray scattering and advanced microscopy techniques
Friction self-piercing riveting (FSPR) is a unique hybrid joining technique that combines the advantages of mechanical interlocking, frictional heat, and solid-state joining (if metallurgically compatible) to produce crack free joints in high strength and/or low-ductility alloys at room temperature. In the current study, Al-7055 sheets were joined using FSPR for lightweigh…
Nov, 2024
Journal
Mitigation of distortion of Al/Steel part under simulated paint baking condition: Experiment and Numerical model studies
Multi-material joining of lightweight structures is essential to reduce vehicle weight for more energy savings and less greenhouse gas emission. However, mismatch of thermal expansion coefficient for dissimilar materials during the paint baking process can induce part distortion and joint failure for adhesive bonding. In the present work, a thermomechanical model based on…
Sep, 2024
Journal
Surface grain refinement of casting A380 aluminum alloy by ultrasonic-assisted surface mechanical grinding treatment
A novel surface processing technique, ultrasonic-assisted surface mechnical grinding treatment (U-SMGT), was proposed and applied to modify the surface micriostructure of the casting aluminum alloy (A380). Comprehensive post-process chracterization techniques including 3D profilometry, optical microscope, scanning electric microscopy (SEM), and electron backscatter diffrac…
Jun, 2024
Journal
Effect of die design on microstructure and mechanical joint strength in friction self-piercing riveted AA7055-T76 and AA7055-T76
In the present study, a unique friction self-piercing riveting (F-SPR) was applied to join high-strength, low-ductility aluminum alloy (AA) 7055-T76 and AA7055-T76 to mitigate a cracking issue. Also, the effect of die design on both joint formation and the mechanical joint performance were investigated. A crack-free joint was achieved when joining AA7055-T76 and AA7055-T76…
Jan, 2024
Journal
Open-air plasma-assisted deposition of organosilicon coating for corrosion protection of AZ91D Mg alloy
As a corrosion barrier layer, open-air plasma-assisted organosilicon coating was applied on AZ91D Mg alloy. Organosilicon-coated AZ91D samples, prepared from two different plasma coating processes, were used for corrosion evaluation based on multistep electrochemical and H2 collection measurements in 3.5 wt% sodium chloride (NaCl) solution. Some coated AZ91D samples were c…
Dec, 2023
Conference Paper
The Role of Rotation Speed on the Joint Strength of Frictional Self-Piercing Riveting AA7055-T76/AA7055-T76
Dec, 2023
Journal
Mechanical Joint Performances of Friction Self-piercing Riveted Carbon Fiber Reinforced Polymer and AZ31B Mg Alloy
Carbon fiber reinforced polymer (CFRP) and AZ31B Mg alloy were joined by the friction self-piercing riveting (F-SPR) with different steel rivet shank sizes. With the increase of rivet shank size, lap shear fracture load and mechanical interlock distance increased. Ultrafine grains were formed at the joint in AZ31B as a result of dynamic recrystallization, which contributed…