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Title: Evolution of solidification texture during additive manufacturing

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep16446· OSTI ID:1241902
 [1];  [2];  [1]
  1. Pennsylvania State Univ., University Park, PA (United States)
  2. Univ. of Michigan, Ann Arbor, MI (United States)

Striking differences in the solidification textures of a nickel based alloy owing to changes in laser scanning pattern during additive manufacturing are examined based on theory and experimental data. Understanding and controlling texture are important because it affects mechanical and chemical properties. Solidification texture depends on the local heat flow directions and competitive grain growth in one of the six <100> preferred growth directions in face centered cubic alloys. Furthermore, the heat flow directions are examined for various laser beam scanning patterns based on numerical modeling of heat transfer and fluid flow in three dimensions. Here we show that numerical modeling can not only provide a deeper understanding of the solidification growth patterns during the additive manufacturing, it also serves as a basis for customizing solidification textures which are important for properties and performance of components.

Research Organization:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
NE0008280
OSTI ID:
1241902
Journal Information:
Scientific Reports, Vol. 5; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 258 works
Citation information provided by
Web of Science

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Cited By (25)

Printability of alloys for additive manufacturing journal January 2016
The Hardness of Additively Manufactured Alloys journal October 2018
A pathway to compound semiconductor additive manufacturing journal August 2019
Microstructure, Solidification Texture, and Thermal Stability of 316 L Stainless Steel Manufactured by Laser Powder Bed Fusion journal August 2018
Determination and controlling of grain structure of metals after laser incidence: Theoretical approach journal January 2017
Texture and Microstructural Features at Different Length Scales in Inconel 718 Produced by Selective Laser Melting journal April 2019
Grain Structure Control of Additively Manufactured Metallic Materials journal November 2017
Structure, Texture and Phases in 3D Printed IN718 Alloy Subjected to Homogenization and HIP Treatments journal May 2017
Modeling mechanical behavior of an additively manufactured metal structure with local texture variations: a study on model form error journal January 2019
Uncertainty analysis of microsegregation during laser powder bed fusion journal February 2019
Selective Laser Melting of Al0.3CoCrFeNi High-Entropy Alloy: Printability, Microstructure, and Mechanical Properties journal August 2019
Finite Interface Dissipation Phase Field Modeling of Ni-Nb Under Additive Manufacturing Conditions journal June 2019
Metal Alloys for Fusion-Based Additive Manufacturing journal February 2018
Build Orientation Effects on Texture and Mechanical Properties of Selective Laser Melting Inconel 718 journal March 2019
Modeling of Ti-W Solidification Microstructures Under Additive Manufacturing Conditions journal May 2017
Uncertainty Analysis of Microsegregation during Laser Powder Bed Fusion text January 2019
Additive Manufacturing of Nickel Superalloys: Opportunities for Innovation and Challenges Related to Qualification journal June 2018
Dimensionless numbers in additive manufacturing journal February 2017
Phase Field Simulation of Dendritic Solidification of Ti-6Al-4V During Additive Manufacturing Process journal August 2018
Knowledge of process-structure-property relationships to engineer better heat treatments for laser powder bed fusion additive manufactured Inconel 718 journal January 2020
Dynamic balance of heat and mass in high power density laser welding journal January 2018
Modeling of texture development in additive manufacturing of Ni-based superalloys journal March 2019
Additive manufacturing – a general corrosion perspective journal August 2018
Three-Dimensional Additively Manufactured Microstructures and Their Mechanical Properties journal October 2019
Thermo-mechanical improvement of Inconel 718 using ex situ boron nitride-reinforced composites processed by laser powder bed fusion journal October 2017

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