A.P. Gerlich
YOU?
Author Swipe
View article: Induction kinetic welding (IKW): An innovative one-shot solid-state technique for circular joints
Induction kinetic welding (IKW): An innovative one-shot solid-state technique for circular joints Open
In this research, an innovative solid-state joining technology has been introduced for butt-welding of circular sections with dissimilar tube and rod geometries, using induction kinetic welding (IKW). This process involves using induction …
View article: Dissimilar Resistance Spot Weld of Ni-Coated Aluminum to Ni-Coated Magnesium Using Cold Spray Coating Technology
Dissimilar Resistance Spot Weld of Ni-Coated Aluminum to Ni-Coated Magnesium Using Cold Spray Coating Technology Open
Direct fusion welding of aluminum (Al) to magnesium (Mg) results in the formation of brittle intermetallic compounds (IMCs) that significantly restrict the application of these joints in structural applications. In this study, cold spray, …
View article: Direct energy deposition via arc manufacturing using ultra-low heat input gas metal arc welding
Direct energy deposition via arc manufacturing using ultra-low heat input gas metal arc welding Open
The use of advanced pulsed waveform control during gas metal arc welding is evaluated for additive manufacturing, also known as 3D printing. This investigation used a water-cooled base and a modified wave shape, operating in the short-circ…
View article: Fatigue Strength of Wire Arc Additive Manufactured Nano‐Particle Enhanced AA7075 Material
Fatigue Strength of Wire Arc Additive Manufactured Nano‐Particle Enhanced AA7075 Material Open
The fatigue strength of wire arc additive manufactured (WAAM) nano‐particle enhanced AA 7075 material was investigated. The material could be deposited without solidification cracks to form a slender wall; however, the fatigue strength was…
View article: Effect of Filler Wire Composition on Weld Metal Microstructure and Mechanical Properties in X80 Steel Laser Welds
Effect of Filler Wire Composition on Weld Metal Microstructure and Mechanical Properties in X80 Steel Laser Welds Open
Laser welding was performed using different filler wires, ER70S steel, commercially pure iron, and pure nickel filler, in the context of welding X80 pipeline steel to assess the microstructure and mechanical properties of the weld metal. I…
View article: Systematic investigation into laser powder bed fusion of Ti-5553 through single-track and multi-layer studies for tailored manufacturing solutions
Systematic investigation into laser powder bed fusion of Ti-5553 through single-track and multi-layer studies for tailored manufacturing solutions Open
Laser Powder Bed Fusion (LPBF) is recognized as an appealing fabrication process for producing metallic parts with customized properties. In the current research, a comprehensive approach is employed to systematically correlate single-trac…
View article: Joint formation mechanism and mechanical properties of laser brazed Zn coated steel under different defocusing conditions
Joint formation mechanism and mechanical properties of laser brazed Zn coated steel under different defocusing conditions Open
Laser brazing, producing a class-A joint surface in automotive, relies on the defocus control to manage laser heating mode and braze performance. This work demonstrates that the laser interaction mechanism transitioned from keyhole welding…
View article: Influence of friction stir processing (FSP) on arc directed energy deposited 316 L stainless steel: A corrosion science study
Influence of friction stir processing (FSP) on arc directed energy deposited 316 L stainless steel: A corrosion science study Open
Friction stir processing (FSP) was employed as a post-printing surface modification technique to enhance surface properties of arc-directed energy deposited 316 L austenitic stainless-steel parts. Corrosion properties and passivity of stir…
View article: Engineering of textured gradient microstructures using directed energy deposition: The impact of adaptive cooling rate
Engineering of textured gradient microstructures using directed energy deposition: The impact of adaptive cooling rate Open
Textured gradient microstructures can be engineered by tailoring the molten pool cooling rate during additive manufacturing (AM). Here we consider the design of grain structures and crystallographic orientations by controlling the solidifi…
View article: The influence of joint geometry on the interfacial bonding in laser-brazed flare joints of automotive steels
The influence of joint geometry on the interfacial bonding in laser-brazed flare joints of automotive steels Open
Laser brazing of thin-gauge Zn-coated steel in a flare V-groove configuration is used in automotive industry, although the effect of joint geometry on interfacial bonding and weld deformation has not been previously published. This work re…
View article: Evaluation of Melting Efficiency in Cold Wire Gas Metal Arc Welding Using 1020 Steel as Substrate
Evaluation of Melting Efficiency in Cold Wire Gas Metal Arc Welding Using 1020 Steel as Substrate Open
A key welding parameter to quantify in the welding process is the ratio of the heat required to melt the weld metal versus the total energy delivered to the weld, and this is referred to as the melting efficiency. It is generally expected …
View article: A numerical modelling for laser Powder-bed fusion of Ti-alloy with a hybrid heat Source: An investigation on solidification and microstructure formation
A numerical modelling for laser Powder-bed fusion of Ti-alloy with a hybrid heat Source: An investigation on solidification and microstructure formation Open
Among metal Additive Manufacturing (AM) methods, Laser Powder-bed Fusion (LPBF), is a proven fabrication method to produce complex-shaped parts with tailored properties. To achieve the desired properties, proper LPBF modelling facilitates …
View article: Effect of Wire Preheat and Feed Rate in X80 Steel Laser Root Welds: Part 2 — Mechanical Properties
Effect of Wire Preheat and Feed Rate in X80 Steel Laser Root Welds: Part 2 — Mechanical Properties Open
In Part 1 of this study, the influences of feed rate and preheat of the wire on the fusion zone microstructure of X80 steel laser root welds were investigated. Part 2 of this study reveals the effect of cold versus hot wire feed on mechani…
View article: Effect of Wire Preheat and Feed Rate in X80 Steel Laser Root Welds: Part 1 — Microstructure
Effect of Wire Preheat and Feed Rate in X80 Steel Laser Root Welds: Part 1 — Microstructure Open
Laser welding with cold versus hot wire feed was employed as a root pass to weld X80 pipeline steel. The influences of wire feed rate and preheat on the fusion zone microstructure were investigated. Increasing the wire feed rate helped gen…
View article: Electrochemical corrosion characteristics of friction stir-reacted aluminum matrix hybrid nanocomposites
Electrochemical corrosion characteristics of friction stir-reacted aluminum matrix hybrid nanocomposites Open
This research work involves the advanced microstructural characterization and corrosion resistance of hybrid nanocomposites produced by friction stir-induced reaction in an Al–Mg alloy/TiO2 system tested by potentiodynamic and spectroscopy…
View article: Influence of Tool Eccentricity pin Positioning on AA6061 Aluminium Alloy Friction Stir Welds
Influence of Tool Eccentricity pin Positioning on AA6061 Aluminium Alloy Friction Stir Welds Open
This study examines the influence of tool eccentricity pin positioning on AA6061 aluminium alloy friction stir welds. A laser scanning confocal microscope and optical microscope was used to analyze the surface roughness and the cross-secti…
View article: Mechanical properties of aluminum to steel dissimilar spot joints produced by cold metal transfer weld-brazing
Mechanical properties of aluminum to steel dissimilar spot joints produced by cold metal transfer weld-brazing Open
Spot joints between aluminum and steel sheets were produced by cold metal transfer arc welding using an AlSi3Mn alloy low melting point filler wire. The current study found that by using optimal welding conditions, the thickness of the joi…
View article: In-situ microstructure control by laser post-exposure treatment during laser powder-bed fusion
In-situ microstructure control by laser post-exposure treatment during laser powder-bed fusion Open
In-situ microstructure control is an important feature of laser powder-bed fusion (LPBF) that enables the tailoring of the mechanical behaviour of additively manufactured metallic parts. In this research, a novel method is introduced to co…
View article: Elucidating microstructural evolution and its effect on the mechanical properties of FSWed alumina-forming austenitic steel for power plant applications
Elucidating microstructural evolution and its effect on the mechanical properties of FSWed alumina-forming austenitic steel for power plant applications Open
Alumina-forming austenitic (AFA) steel is considered as a promising candidate used for advanced energy systems. Fusion welding of austenitic steels usually requires the introduction of a certain delta (δ) ferrite to avoid thermal cracking,…
View article: Refill Friction Stir Spot Welding Al Alloy to Copper via Pure Metallurgical Joining Mechanism
Refill Friction Stir Spot Welding Al Alloy to Copper via Pure Metallurgical Joining Mechanism Open
The current investigation of refill friction stir spot welding (refill FSSW) Al alloy to copper primarily involved plunging the tool into bottom copper sheet to achieve both metallurgical and mechanical interfacial bonding. Compared to con…
View article: Interfacial Bonding and Mechanical Properties of Al/Mg Dissimilar Refill Friction Stir Spot Welds Using a Grooved Tool
Interfacial Bonding and Mechanical Properties of Al/Mg Dissimilar Refill Friction Stir Spot Welds Using a Grooved Tool Open
Al/Mg dissimilar welds were successfully fabricated by refill friction stir spot welding using a grooved sleeve tool. Influences of sleeve penetration depth and rotational speed on the weld formation and mechanical performance were systema…
View article: Globular-to-Spray Transition in Cold Wire Gas Metal Arc Welding
Globular-to-Spray Transition in Cold Wire Gas Metal Arc Welding Open
The electrical current required for a transition from globular to spray droplet transfer during gas metal arc welding (GMAW) is determined by the specified wire feed speed in the case of constant-voltage power supplies. Generally, in narro…
View article: Depth-sensing thermal stability of accumulative fold-forged nanostructured materials
Depth-sensing thermal stability of accumulative fold-forged nanostructured materials Open
Accumulative fold-forging (AFF) as a newly developed severe plastic deformation (SPD) process based on the repetitive fold-forging steps is implemented for the production of the layered UFG (~200 nm) AA8006 alloy and AA8006-B4C nanocomposi…