Skip to main content

NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Additively manufactured nitrogen-atomized 17-4 PH stainless steel with mechanical properties comparable to wrought

Published

Author(s)

Eric Lass, Mark R. Stoudt, Maureen E. Williams

Abstract

The microstructure of the additively manufactured (AM) nitrogen-atomized 17-4 contains 12±2 % retained austenite after conventional 17-4 post-build thermal processing, compared wrought which contains ≈100 % BCC/martensite, resulting a yield strength half that of wrought. By solutionizing at 1273 K (1000 °C) instead of 1323 K (1050 °C), more nitrogen is trapped as M(C,N)-carbides, and upon further cooling to 233 K (-40 °C) the AM17-4 microstructure contains ≈95 %. This alternative solutionization recovers the yield strength of the AM material to >90 % of its wrought counterpart, a critical first step the implementation of AM17-4 in real-world applications.
Citation
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume
50A
Issue
4

Keywords

additive manufacturing, 17-4 stainless steel, martensite, retained austenite

Citation

Lass, E. , Stoudt, M. and Williams, M. (2019), Additively manufactured nitrogen-atomized 17-4 PH stainless steel with mechanical properties comparable to wrought, Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, [online], https://doi.org/10.1007/s11661-019-05124-0 (Accessed October 11, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created February 4, 2019, Updated September 25, 2019
Was this page helpful?