Joel Andersson

A study of the dynamic impact behaviour of IN 718 and ATI 718Plus® superalloys

The dynamic impact response of IN 718 and ATI 718Plus®, in both the solution heat treated and age-hardened conditions, were investigated at...

Analysis and constitutive modelling of high strain rate deformation behaviour of wire-arc additive-manufactured ATI 718Plus superalloy

A fundamental prerequisite for obtaining realistic finite element simulation of machining processes, which has become a key machinability assessmen...

EBM-manufactured single tracks of Alloy 718 : Influence of energy input and focus offset on geometrical and microstructural characteristics

Electron beam melting-powder bed fusion (EBM-PBF) is an additive manufacturing process, which is able to produce parts in layer-by-layer fashion fr...

Influence of thermal post treatments on microstructure and oxidation behavior of EB-PBF manufactured Alloy 718

The effect of thermal post treatments consisting of heat treatment (HT), hot isostatic pressing (HIP), and combined HIP-HT on microstructure and...

Varestraint weldability testing of cast ATI® 718Plus™ : a comparison to cast Alloy 718

Varestraint testing of the newly developed cast ATI® 718Plus™ after pseudo-HIP (hot isostatic pressing) heat treatments showed that the extent of...

Correlation of precipitate evolution with Vickers hardness in Haynes® 282® superalloy : In-situ high-energy SAXS/WAXS investigation

The aim of this work is to characterize the precipitation kinetics in Haynes® 282® superalloys using in-situ high-energy Small Angle X-ray Scatteri...

Effect of Process Parameters on the Crack Formation in Laser Metal Powder Deposition of Alloy 718

Cracking in Alloy 718 using laser metal powder deposition has been evaluated in this study. It is found that the material is susceptible to crackin...

Hot cracking in cast alloy 718

Hot cracking susceptibility of the Fe–Ni-based precipitation hardening cast superalloy Alloy 718 was studied by Varestraint weldability testing....

Hot Cracking Mechanisms in Welding Metallurgy : A Review of Theoretical Approaches

Hot cracking often refers to the appearance of liquid films along grain boundaries or to another place in the weld metal structure. Despite hot...

Improved dynamic impact behaviour of wire-arc additive manufactured ATI 718Plus®

The dynamic response and impact resistance of wire-arc additive manufactured (AMed) and wrought ATI 718Plus in different heat treatment conditions...

Influence of build layout and orientation on microstructural characteristics of electron beam melted Alloy 718

Effects of build layout and orientation consisting of (a) height from the build plate (Z-axis), (b) distance between samples, and (c) location in t...

Influence of laser exposure time and point distance on 75-μm-thick layer of selective laser melted Alloy 718

A systematic matrix with 25 samples, using five different point distances and five laser exposure times, depositing 75-μm-thick layers of Alloy 718...

Influence of successive thermal cycling on microstructure evolution of EBM-manufactured alloy 718 in track-by-track and layer-by-layer design

Successive thermal cycling (STC) during multi-track and multi-layer manufacturing of Alloy 718 using electron beam melting (EBM) process leads to a...

Investigation on effect of welding parameters on solidification cracking of austenitic stainless steel 314

This study investigates the solidification cracking susceptibility of the austenitic stainless steel 314. Longitudinal Varestraint testing was used...

Isothermal Oxidation Behavior of EBM-Additive Manufactured Alloy 718

Oxidation of Alloy 718 manufactured by electron beam melting (EBM) process has been undertaken in ambient air at 650, 700, and 800 °C for up to 168...

Measurement of the thermal cycle in the base metal heat affected zone of cast ATI ® 718Plus TM during manual multi-pass TIG welding

This paper presents a method to acquire thermal data in the base metal heat affected zone (HAZ) during manual multi-pass TIG welding of ATI ® 718Pl...

Microstructural Characterization of Laser Metal Powder Deposited Alloy 718

A microstructural study of Laser Metal Powder Deposition (LMPD) of Alloy 718, using a low (40 J/mm) and high (100 J/mm) heat inputs (HIs) was...

Microstructure Dependence of Dynamic Impact Behaviour of ATI 718plus® Superalloy

ATI 718Plus® is a γ′-strengthened nickel-based superalloy developed to substitute the widely used Alloy 718 in aero-engine applications. This newer...

Microstructure Development in Track-by-Track Melting of EBM-Manufactured Alloy 718

Electron beam melting (EBM) is a powder-bed fusion process within the group of additive manufacturing (AM) technology that is used to fabricate hig...

Microstructure of Selective Laser Melted Alloy 718 in As-Manufactured and Post Heat Treated Condition

Manufacturing of Alloy 718 with selective laser melting (SLM) process faces several challenges. One of the challenges is the process-induced...

Proceedings of the 9th International Symposium on Superalloy 718 & Derivatives : Energy, Aerospace, and Industrial Applications

This technical meeting will focus on Alloy 718 and Superalloys in this class relative to alloy and process development, production, product...

Review of Weldability of Precipitation Hardening Ni- and Fe-Ni-Based Superalloys

Fabrication and welding of structural components for the hot section of aero-engines continues to be of high importance to the manufacturing indust...

The Influence of Base Metal Microstructure on Weld Cracking in Manually GTA Repair Welded Cast ATI 718Plus®

The effect of base metal conditions on the weld cracking response of cast ATI 718Plus® was investigated in this study, comparing as cast...

Varestraint weldability testing of additive manufactured alloy 718

The weldability in terms of susceptibility towards hot cracking of selective laser melted (SLM) Alloy 718 was investigated and wrought Alloy 718 wa...

Varestraint Weldability Testing of ATI 718Plus® : Influence of Eta Phase

This study investigates the effect of eta phase on hot cracking susceptibility of ATI 718Plus®. Two heat treatment conditions of 950 °C/1 h and 950...

Weldability of wrought Haynes 282 repair welded using manual gas tungsten arc welding

The ability of the precipitation hardening superalloy Haynes® 282® to be repaired by multi-pass gas tungsten arc welding is investigated in this...

Evaluation of a temperature measurement method developed for laser metal deposition

Measuring temperatures in the material during laser metal deposition (LMD) has an inherent challenge caused by the laser. When thermocouples are...

Investigation of laser metal deposited Alloy 718 onto an EN 1.4401 stainless steel substrate

This paper focuses on how process parameters affect the deposition of Alloy 718 onto an EN 1.4401 stainless steel substrate in terms of secondary...

Microstructural Analyses of ATI 718Plus® Produced by Wire-ARC Additive Manufacturing Process

A detailed microstructural study of ATI 718Plus superalloy produced by the wire-arc additive manufacturing (WAAM) process was performed through the...

Use of Indicators for Hot and Warm Cracking in Welded Structures

Weight reduction of mechanical components is becoming increasingly important as a way to provide more environment friendly production and operation...

Weldability of superalloys alloy 718 and ATI® 718Plus™ : A study performed by Varestraint testing

In this study, the old and well-known alloy 718 is compared with the newly developed ATI® 718Plus™ from the weldability point of view. This is done...

A Historical perspective on Varestraint testing and the importance of testing parameters

A Review of Strain Age Cracking in Nickel Based Superalloys

This paper reviews the literature with emphasis on strain age cracking, a cracking phenomenon that can occur during welding or heat treatment of...

A review of the effect of selective laser melting process parameters and its influence on microstructure, defects and strength in the iron-nickel based superalloy Alloy 718

This review presents a basic insight into the powder-bed fusion process selective laser melting (SLM), with focus on the microstructure and...

An investigation of micro-mechanisms in hydrogen induced cracking in nickel-based superalloy 718

Hydrogen embrittlement of the nickel-iron based superalloy 718 has been investigated using slow strain rate tests for pre-charged material and also...

Improved understanding of Varestraint Testing : Nickel-based superalloys

Information about the book: This is the fourth volume in the well-established series of compendiums devoted to the subject of weld hot cracking. It...

Influence of Heat Input on Grain Structure in Thin-Wall Deposits using Laser Metal Powder Deposition

Laser metal deposition (LMD) is an additive manufacturing method which is used to deposit material directly onto a metal surface layer upon layer...

Precipitation behavior of gamma′ precipitates in the fusion zone of TIG welded ATI 718Plus®

The precipitation behavior of the main strengthening phase, γ′ precipitates, in ATI 718Plus® superalloy after Tungsten Inert Gas (TIG) welding and...

Review of Hot Cracking Phenomena in Austenitic Stainless Steels

Hot cracking is a phenomenon occurring during welding. Hot cracks that form in the fusion zone are named solidification cracking while cracking tha...

Simulation of additive manufacturing using coupled constitutive and microstructure models

The paper describes the application of modeling approaches used in Computational Welding Mechanics (CWM) applicable for simulating Additive...

Weldability of Ni-Based Superalloys Waspaloy® and Haynes® 282® : A Study Performed with Varestraint Testing

There is a need for materials with high strength, oxidation resistance, thermal stability and adequate weldability in order to facilitate the...

Weldability Study of Superalloys Waspaloy® and Haynes® 282®

The weldability of Waspaloy® and Haynes® 282® have been evaluated using the Varestraint weldability test. The experiments reveal that Waspaloy® has...

Evaluation of the effect of process parameters on microstructural characteristics in laser metal deposition of Alloy 718

Industrial application of computational welding mechanics

Economical Viability of Laser Metal Deposition

Reports on large economic savings using Additive Manufacturing (AM) has been found in literature when exploiting the positive capabilities of AM....

Finite Element Analysis Using a Dislocation Density Based Flow Stress Model Coupled with Model for Precipitate Evolution

HIP-Densification of Alloy 718 and ATI 718Plus

Precipitate evolution in the early stages of ageing in Inconel 718 investigated using small-angle x-ray scattering

Microstructural evolution during the early stages of ageing (less than one hour) in a Ni-Cr-Fe based superalloy Inconel 718 (IN718) has been...

Review of Laser Deposited Superalloys Using Powder as an Additive

Solidification of Alloy 718, ATI 718Plus and Waspaloy