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Title: Strengthening of ferrous binder jet 3D printed components through bronze infiltration

Journal Article · · Additive Manufacturing
 [1];  [2];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility (MDF); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility (MDF)
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Fully-dense, net shape objects have been fabricated from a rapidly-solidified ferrous powder using binder-jet 3D printing and molten bronze infiltration. X-ray diffraction, scanning electron microscopy, and differential thermal analysis were used to characterize the structural evolution of the powder feedstock during an infiltration heating cycle. Microindentation and bend tests were performed on the infiltrated material to evaluate its mechanical properties. The infiltrated material had an 11 GPa hardness and moderate damage tolerance. It was found that infiltration improved both the ductility and strength of the sintered preforms by eliminating the stress concentration at the interparticle necks.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility (MDF)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office; USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1392678
Alternate ID(s):
OSTI ID: 1354650
Journal Information:
Additive Manufacturing, Vol. 15, Issue C; ISSN 2214-8604
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

A Review on Binder Jet Additive Manufacturing of 316L Stainless Steel journal September 2019
A review on recent developments in binder jetting metal additive manufacturing: materials and process characteristics journal September 2019

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Related Subjects

36 MATERIALS SCIENCE
Powder metallurgy
Microstructure design
Additive manufacturing
Sintering
Infiltration