Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Ultra-high temperature testing and performance of L-PBF C103

Journal Article · · International Journal of Refractory and Hard Metals
 [1];  [1];  [2];  [3];  [1]
  1. The Ohio State Univ., Columbus, OH (United States)
  2. NASA Glenn Research Center, Cleveland, OH (United States)
  3. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Additive Manufacturing (AM) of refractory alloys is gaining traction as a materials processing route for components subject to extreme temperature environments. Due to the low oxidation resistance of refractory alloys, novel methods for evaluating their elevated temperature performance must be developed. In this work, a Gleeble® 3800 thermomechanical load frame was modified to evaluate the mechanical properties of laser powder bed fusion (L-PBF) consolidated niobium alloy C103 ranging from room temperature (RT) to 1400 °C. The fixturing and sample geometry were designed to accommodate Joule heating and prevent damage to the test chamber. Oxidation of the samples was minimized via testing in vacuum level of 1E-5 Torr. Ultimate tensile strength (UTS), yield strength (YS), elongation, and strain-hardening behavior were determined as a function of temperature. L-PBF C103 presented an average UTS of ∼650 MPa and over 25 % elongation at RT. Above RT, the UTS and YS dropped then leveled off from 500 °C to 1000 °C with values ranging from ∼400 MPa to ∼460 MPa, which is consistent with dynamic strain aging observed in this class of alloys. The strength rapidly declined after 1200 °C to ∼150 MPa at 1400 °C. Fractography indicated ductile fractures for the C103 at all test temperatures, and Electron Backscatter Diffraction (EBSD) analysis revealed a textured microstructure and the presence of dynamic recrystallization within the necked region of the sample tested at 1400 °C.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
89233218CNA000001
OSTI ID:
2568859
Report Number(s):
LA-UR--25-21356; 10.1016/j.ijrmhm.2025.107227
Journal Information:
International Journal of Refractory and Hard Metals, Journal Name: International Journal of Refractory and Hard Metals Vol. 131; ISSN 0263-4368
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (27)

The oxidation behavior and protection of niobium journal August 1990
Microstructural and mechanical characterization of additively manufactured parts of maraging 18Ni300M steel with water and gas atomized powders feedstock journal November 2023
Buffered electrochemical polishing of niobium journal March 2011
New Opportunities in Refractory Alloys journal May 2020
Effect of Temperature on Tensile Properties of Laser Powder Bed Fusion Additively Manufactured Niobium Alloy C103 journal January 2025
Overview of research on aerospace metallic structural materials journal September 1991
Advancement of extreme environment additively manufactured alloys for next generation space propulsion applications journal October 2023
Atomistic simulations of dislocations in a model BCC multicomponent concentrated solid solution alloy journal February 2017
Computation of entropies and phase equilibria in refractory V-Nb-Mo-Ta-W high-entropy alloys journal January 2018
Molybdenum and tungsten manufactured by selective laser melting: Analysis of defect structure and solidification mechanisms journal November 2019
Powder HIP of pure Nb and C-103 alloy: The influence of powder characteristics on mechanical properties journal April 2022
Mechanical properties of Nb25Mo25Ta25W25 and V20Nb20Mo20Ta20W20 refractory high entropy alloys journal May 2011
Dynamic recrystallization: plasticity enhancing structural development journal September 2004
Phase equilibria, microstructure, and high temperature oxidation resistance of novel refractory high-entropy alloys journal March 2015
Microstructure and mechanical properties at elevated temperatures of a new Al-containing refractory high-entropy alloy Nb-Mo-Cr-Ti-Al journal March 2016
Thermodynamic properties of refractory high entropy alloys journal October 2016
High temperature oxidation behaviors of equimolar NbTiZrV and NbTiZrCr refractory complex concentrated alloys (RCCAs) journal December 2017
On the current research progress of metallic materials fabricated by laser powder bed fusion process: a review journal September 2022
Metal additive manufacturing in aerospace: A review journal November 2021
On the occurrence of dynamic strain aging in C-103 Nb based alloy journal January 2015
Mechanical properties and microstructural characteristics of additively manufactured C103 niobium alloy journal January 2022
Tensile behavior of a slurry Fe-Cr-Si coated Nb-alloy evaluated by Gleeble testing journal September 2018
High temperature oxidation behavior of C103 alloy with boronized and siliconized coatings during 1000 h at 1100 °C in air journal July 2019
Using kinetics to avoid sigma phase formation on hyper duplex stainless weld cladding journal December 2023
Using the Hollomon Model to Predict Strain-Hardening in Metals journal January 2017
Factors affecting dynamic recrystallization of metals and alloys journal May 1987
A Review of Solid-Solution Models of High-Entropy Alloys Based on Ab Initio Calculations journal November 2017

Similar Records

Investigation of Microstructures and Tensile Properties of 316L Stainless Steel Fabricated via Laser Powder Bed Fusion
Journal Article · Thu Feb 15 23:00:00 EST 2024 · Materials · OSTI ID:2319032

Modified ring stretch tensile testing of Zr-1Nb cladding
Technical Report · Sat Feb 28 23:00:00 EST 1998 · OSTI ID:305919

Modified ring stretch tensile testing of Zr-1Nb cladding.
Conference · Thu Dec 04 23:00:00 EST 1997 · OSTI ID:8127