Characterization of Nanoscale Mn/Fe-Rich Intermetallic B2-NiAl in Ultra-Low Carbon Bainitic Steel with Super-High Strength
Publication Name
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Abstract
An ultra-low carbon bainitic steel is developed through nanoprecipitation of high-density Mn/Fe-rich intermetallic B2-NiAl. A high yield strength of ~ 1.3 GPa and a good total elongation of ~ 13 pct are attained via minimal lattice misfit nanoprecipitation. Atom probe tomography and high-resolution transmission electron microscope were applied to characterize nanoscale precipitates. An increment of 544 MPa in yield strength is achieved after an aging process, predominantly attributed to the order strengthening mechanism. [Figure not available: see fulltext.].
Open Access Status
This publication is not available as open access
Volume
52
Issue
12
First Page
5146
Last Page
5151
Funding Number
51971165
Funding Sponsor
National Natural Science Foundation of China