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Title: Extreme-value statistics reveal rare failure-critical defects in additive manufacturing

Journal Article · · Advanced Engineering Materials
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  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Univ. of New Mexico, Albuquerque, NM (United States)

Additive manufacturing enables the rapid, cost effective production of large populations of material test coupons such as tensile bars. By adopting streamlined test methods including ‘drop-in’ grips and non-contact extensometry, testing these large populations becomes more efficient. Unlike hardness tests, the tensile test provides a direct measure of yield strength, flow properties, and ductility, which can be directly incorporated into solid mechanics simulations. In the present work, over 1000 nominally identical tensile tests were used to explore the effect of process variability on the mechanical property distributions of a precipitation hardened stainless steel, 17-4PH, produced by a laser powder bed fusion process, also known as direct metal laser sintering. With this large dataset, rare defects are revealed that affect only ~2% of the population, stemming from a single build lot of material. Lastly, the rare defects caused a substantial loss in ductility and were associated with an interconnected network of porosity.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1343622
Report Number(s):
SAND-2017-0719J; 650654
Journal Information:
Advanced Engineering Materials, Vol. 19, Issue 8; ISSN 1438-1656
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 55 works
Citation information provided by
Web of Science

References (40)

Structural and dynamical properties of long-range correlated percolation journal August 1992
Geometrical percolation threshold of overlapping ellipsoids journal July 1995
Manufacturing near dense metal parts via indirect selective laser sintering combined with isostatic pressing journal June 2007
Integrated computational materials engineering: A new paradigm for the global materials profession journal November 2006
High-throughput stochastic tensile performance of additively manufactured stainless steel journal March 2017
Producing metal parts with selective laser sintering/hot isostatic pressing journal December 1998
Microstructural evolution in a 17-4 PH stainless steel after aging at 400 °C journal February 1999
Process Modeling in Laser Deposition of Multilayer SS410 Steel journal March 2007
A study of the microstructural evolution during selective laser melting of Ti–6Al–4V journal May 2010
Cellular Ti–6Al–4V structures with interconnected macro porosity for bone implants fabricated by selective electron beam melting journal September 2008
Microstructure and hardness investigation of 17-4PH stainless steel by laser quenching journal February 2012
A Sequential Tensile Method for Rapid Characterization of Extreme-value Behavior in Microfabricated Materials journal September 2009
Comparison of density measurement techniques for additive manufactured metallic parts journal August 2011
The Roadmap for Additive Manufacturing and Its Impact journal March 2014
Influence of strain-rate sensitivity on necking under uniaxial tension journal August 1977
Effects of processing parameters on tensile properties of selective laser melted 304 stainless steel journal September 2013
Energy input effect on morphology and microstructure of selective laser melting single track from metallic powder journal April 2013
Versatile algorithms for the computation of 2-point spatial correlations in quantifying material structure journal January 2016
Selective laser melting of biocompatible metals for rapid manufacturing of medical parts journal August 2007
Calculation of laser absorption by metal powders in additive manufacturing journal January 2015
Oxide Structures Produced on Iron-Chromium Alloys by a Dissociative Mechanism journal January 1963
Additive Manufacturing: Current State, Future Potential, Gaps and Needs, and Recommendations journal February 2015
Analytical approximation of the percolation threshold for overlapping ellipsoids of revolution
  • Yi, Y. -B.; Sastry, A. M.
  • Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, Vol. 460, Issue 2048 https://doi.org/10.1098/rspa.2004.1279
journal August 2004
Defect generation and propagation mechanism during additive manufacturing by selective beam melting journal November 2014
Mechanical Properties of Austenitic Stainless Steel Made by Additive Manufacturing journal January 2014
Study on microstructure, mechanical properties and machinability of efficiently additive manufactured AISI 316L stainless steel by high-power direct laser deposition journal February 2017
Additive manufacturing of Ti–6Al–4V components by shaped metal deposition: Microstructure and mechanical properties journal June 2010
Effect of specimen surface preparation on room temperature tensile ductility of an Fe-containing NiAl single crystal alloy journal January 1996
High temperature oxidation of Fe–Cr alloy in O2–H2–H2O atmospheres; microstructure and kinetics journal November 2003
Growth of Oxide Whiskers On Metals at High Temperature journal November 1957
Reducing porosity in AlSi10Mg parts processed by selective laser melting journal October 2014
Analysis of defect generation in Ti–6Al–4V parts made using powder bed fusion additive manufacturing processes journal October 2014
Representative volume: Existence and size determination journal November 2007
Anisotropic tensile behavior of Ti–6Al–4V components fabricated with directed energy deposition additive manufacturing journal April 2015
Additive manufacturing and its societal impact: a literature review journal October 2012
Metal Additive Manufacturing: A Review journal April 2014
Porosity formation and gas bubble retention in laser metal deposition journal May 2009
Percolation, statistical topography, and transport in random media journal October 1992
Review of in-situ process monitoring and in-situ metrology for metal additive manufacturing journal April 2016
In-process sensing in selective laser melting (SLM) additive manufacturing journal February 2016

Cited By (5)

Evolution of damage and failure in an additively manufactured 316L SS structure: experimental reinvestigation of the third Sandia fracture challenge journal March 2019
Investigating Additively Manufactured 17-4 PH for Structural Applications journal July 2019
Three-Dimensional Additively Manufactured Microstructures and Their Mechanical Properties journal October 2019
Three-dimensional Analysis and Reconstruction of Additively Manufactured Materials in the Cloud-Based BisQue Infrastructure journal March 2019
Progress toward autonomous experimental systems for alloy development journal April 2019