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Title: An improved prediction of residual stresses and distortion in additive manufacturing

Journal Article · · Computational Materials Science
 [1];  [2];  [1]
  1. Pennsylvania State University, University Park, PA (United States)
  2. The Ohio State University, Columbus, OH (United States)

In laser assisted additive manufacturing (AM) an accurate estimation of residual stresses and distortion is necessary to achieve dimensional accuracy and prevent premature fatigue failure, delamination and buckling of components. Since many process variables affect AM, experimental measurements of residual stresses and distortion are time consuming and expensive. Numerical thermo-mechanical models can be used for their estimation, but the quality of calculations depends critically on the accurate transient temperature field which affects both the residual stresses and distortion. Here in this study, a well-tested, three-dimensional, transient heat transfer and fluid flow model is used to accurately calculate transient temperature field for the residual stress and distortion modeling. The calculated residual stress distributions are compared with independent experimental results. It is shown that the residual stresses can be significantly minimized by reducing the layer thickness during AM. Inconel 718 components are found to be more susceptible to delamination than Ti-6Al-4V parts because they encounter higher residual stresses compared to their yield strength.

Research Organization:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP); American Welding Society; USDOE
Grant/Contract Number:
NE0008280; 179466
OSTI ID:
1533667
Alternate ID(s):
OSTI ID: 1397597
Journal Information:
Computational Materials Science, Vol. 126, Issue C; ISSN 0927-0256
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 409 works
Citation information provided by
Web of Science

References (36)

Laser additive manufacturing of metallic components: materials, processes and mechanisms journal May 2012
Thermo-mechanical analysis of Wire and Arc Additive Layer Manufacturing process on large multi-layer parts journal July 2011
Numerical and experimental investigations on the residual stresses of the butt-welded joints journal April 2004
Numerical simulation of temperature field and residual stress in multi-pass welds in stainless steel pipe and comparison with experimental measurements journal September 2006
Residual stresses in laser direct metal deposited Waspaloy journal March 2011
Residual stresses in LENS® components using neutron diffraction and contour method journal June 2005
The role of residual stress and heat affected zone properties on fatigue crack propagation in friction stir welded 2024-T351 aluminium joints journal January 2003
An Experimental Investigation into Additive Manufacturing-Induced Residual Stresses in 316L Stainless Steel journal September 2014
Fatigue crack propagation behaviour in wire+arc additive manufactured Ti‐6Al‐4V: Effects of microstructure and residual stress journal January 2016
On the fatigue crack growth behavior in 316L stainless steel manufactured by selective laser melting journal April 2014
Comparison of Residual Stresses in Inconel 718 Simple Parts Made by Electron Beam Melting and Direct Laser Metal Sintering journal January 2015
Evaluation of residual plastic strain distribution in dissimilar metal weld by hardness mapping journal October 2013
Residual stress. Part 1 – Measurement techniques journal April 2001
Application of Finite Element Calculations to Residual Stress Measurements journal April 1981
Heat transfer and material flow during laser assisted multi-layer additive manufacturing journal September 2014
Spatial variation of melt pool geometry, peak temperature and solidification parameters during laser assisted additive manufacturing process journal November 2014
Current Issues and Problems in Welding Science journal July 1992
Heat transfer and fluid flow in additive manufacturing journal November 2013
Process Maps for Predicting Residual Stress and Melt Pool Size in the Laser-Based Fabrication of Thin-Walled Structures journal March 2006
Deformation modelling in layered manufacturing of metallic parts using gas metal arc welding: effect of process parameters journal September 2005
Thermal stresses and deposition patterns in layered manufacturing journal October 2001
Three-dimensional transient finite element analysis for residual stresses in the laser aided direct metal/material deposition process journal August 2005
Residual stresses in selective laser sintering and selective laser melting journal October 2006
Residual stresses in LENS-deposited AISI 410 stainless steel plates journal November 2008
Experimental study and modeling of H13 steel deposition using laser hot-wire additive manufacturing journal September 2016
A 3D dynamic numerical approach for temperature and thermal stress distributions in multilayer laser solid freeform fabrication process journal December 2007
Microstructural mechanisms during hot working of commercial grade Ti–6Al–4V with lamellar starting structure journal February 2002
Experimental Study of Direct Laser Deposition of Ti-6Al-4V and Inconel 718 by Using Pulsed Parameters journal January 2014
Residual Stresses and Stress Intensity Factor Calculations in T-Welded Joints journal August 2013
A Finite Element Study of the Residual Stress and Deformation in Hemispherical Contacts journal June 2005
On the mechanical behaviour of titanium alloy TiAl6V4 manufactured by selective laser melting: Fatigue resistance and crack growth performance journal March 2013
Electron Beam Additive Manufacturing of Titanium Components: Properties and Performance journal November 2013
Effects of microstructure on the fatigue crack growth behavior of light metals and design considerations journal January 2010
Printability of alloys for additive manufacturing journal January 2016
Origin of grain orientation during solidification of an aluminum alloy journal August 2016
Mitigation of thermal distortion during additive manufacturing journal January 2017

Cited By (2)

Online Stress Measurement During Laser-aided Metallic Additive Manufacturing journal May 2019
Assumption of Constraining Force to Explain Distortion in Laser Additive Manufacturing journal November 2018

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