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Title: Duplex precipitates and their effects on the room-temperature fracture behaviour of a NiAl-strengthened ferritic alloy

Abstract

Duplex precipitates are presented in a NiAl-strengthened ferritic alloy. They were characterized by the ultra-small angle X-ray scattering and transmission electron microscope. Fine cooling precipitates with the size of several to tens of nanometres harden the matrix considerably at room temperature. The cracks will likely to initiate from precipitates, and coalesce and propagate quickly through the matrix due to the excessive hardening effect of cooling precipitates, which lead to the premature fracture of NiAl-strengthened ferritic alloys.

Authors:
 [1];  [1];  [2];  [1]
  1. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engneering.
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Tennessee, Knoxville, TN (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE); USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1221541
Alternate Identifier(s):
OSTI ID: 1221805
Grant/Contract Number:  
AC02-06CH11357; NT0008089; FE0005868; NSF/CHE-1346572
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Materials Research Letters
Additional Journal Information:
Journal Volume: 3; Journal Issue: 3; Journal ID: ISSN 2166-3831
Publisher:
Taylor and Francis
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; NiAl-strengthened ferritic steels; small-angle X-ray scattering (SAXS); precipitation; fracture; order strengthening

Citation Formats

Sun, Zhiqian, Song, Gian, Ilavsky, Jan, and Liaw, Peter K. Duplex precipitates and their effects on the room-temperature fracture behaviour of a NiAl-strengthened ferritic alloy. United States: N. p., 2015. Web. doi:10.1080/21663831.2015.1021492.
Sun, Zhiqian, Song, Gian, Ilavsky, Jan, & Liaw, Peter K. Duplex precipitates and their effects on the room-temperature fracture behaviour of a NiAl-strengthened ferritic alloy. United States. https://doi.org/10.1080/21663831.2015.1021492
Sun, Zhiqian, Song, Gian, Ilavsky, Jan, and Liaw, Peter K. Mon . "Duplex precipitates and their effects on the room-temperature fracture behaviour of a NiAl-strengthened ferritic alloy". United States. https://doi.org/10.1080/21663831.2015.1021492. https://www.osti.gov/servlets/purl/1221541.
@article{osti_1221541,
title = {Duplex precipitates and their effects on the room-temperature fracture behaviour of a NiAl-strengthened ferritic alloy},
author = {Sun, Zhiqian and Song, Gian and Ilavsky, Jan and Liaw, Peter K.},
abstractNote = {Duplex precipitates are presented in a NiAl-strengthened ferritic alloy. They were characterized by the ultra-small angle X-ray scattering and transmission electron microscope. Fine cooling precipitates with the size of several to tens of nanometres harden the matrix considerably at room temperature. The cracks will likely to initiate from precipitates, and coalesce and propagate quickly through the matrix due to the excessive hardening effect of cooling precipitates, which lead to the premature fracture of NiAl-strengthened ferritic alloys.},
doi = {10.1080/21663831.2015.1021492},
url = {https://www.osti.gov/biblio/1221541}, journal = {Materials Research Letters},
issn = {2166-3831},
number = 3,
volume = 3,
place = {United States},
year = {2015},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
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Citation Metrics:
Cited by: 8 works
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    Works referencing / citing this record: