skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Nanoscale Solute Partitioning and Carbide Precipitation in a Multiphase TRIP Steel Analyzed by Atom Probe Tomography

Abstract

Nanoscale solute partitioning across multiple constituent phases in a 980-grade quenched and partitioned (Q&P) steel was analyzed using atom probe tomography (APT). The Q&P process was used to increase the C content in the retained austenite phase thereby improving its stability under plastic straining. Significant carbon enrichment of austenite was measured with decreased levels of C in martensite and almost depleted C content in ferrite, supporting the C partitioning mechanism in the literature. The APT analysis of retained austenite surrounded by martensite demonstrated a higher amount of C content compared with retained austenite surrounded by the ferrite phase. Lath and discrete carbide particle precipitation was also observed inside martensite colonies, tying up C and reducing the total amount of C available for austenite stabilization. In addition, the partitioning of Mn and other minor elements was quantitatively investigated by correlating APT and SEM-EBSD. Furthermore, these techniques provide a robust methodology for analyzing nanoscale compositional partitioning in multiphase steels, TRIP steels in particular, which can be used to better explain their microstructure-mechanical property relationships.

Authors:
ORCiD logo [1];  [2];  [2];  [3];  [4]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Clemson Univ., Greenville, SC (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. General Motors Global Technical Center, Warren, MI (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1461048
Alternate Identifier(s):
OSTI ID: 1560642
Report Number(s):
PNNL-SA-132326
Journal ID: ISSN 1047-4838
Grant/Contract Number:  
AC05-00OR22725; AC05-76RL01830
Resource Type:
Accepted Manuscript
Journal Name:
JOM. Journal of the Minerals, Metals & Materials Society
Additional Journal Information:
Journal Volume: 70; Journal Issue: 829; Journal ID: ISSN 1047-4838
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Carbon partitioning, quenching and partitioning

Citation Formats

Devaraj, Arun, Xu, Zeren, Abu-Farha, Fadi, Sun, Xin, and Hector, Jr., Louis G. Nanoscale Solute Partitioning and Carbide Precipitation in a Multiphase TRIP Steel Analyzed by Atom Probe Tomography. United States: N. p., 2018. Web. doi:10.1007/s11837-018-2974-1.
Devaraj, Arun, Xu, Zeren, Abu-Farha, Fadi, Sun, Xin, & Hector, Jr., Louis G. Nanoscale Solute Partitioning and Carbide Precipitation in a Multiphase TRIP Steel Analyzed by Atom Probe Tomography. United States. doi:10.1007/s11837-018-2974-1.
Devaraj, Arun, Xu, Zeren, Abu-Farha, Fadi, Sun, Xin, and Hector, Jr., Louis G. Tue . "Nanoscale Solute Partitioning and Carbide Precipitation in a Multiphase TRIP Steel Analyzed by Atom Probe Tomography". United States. doi:10.1007/s11837-018-2974-1. https://www.osti.gov/servlets/purl/1461048.
@article{osti_1461048,
title = {Nanoscale Solute Partitioning and Carbide Precipitation in a Multiphase TRIP Steel Analyzed by Atom Probe Tomography},
author = {Devaraj, Arun and Xu, Zeren and Abu-Farha, Fadi and Sun, Xin and Hector, Jr., Louis G.},
abstractNote = {Nanoscale solute partitioning across multiple constituent phases in a 980-grade quenched and partitioned (Q&P) steel was analyzed using atom probe tomography (APT). The Q&P process was used to increase the C content in the retained austenite phase thereby improving its stability under plastic straining. Significant carbon enrichment of austenite was measured with decreased levels of C in martensite and almost depleted C content in ferrite, supporting the C partitioning mechanism in the literature. The APT analysis of retained austenite surrounded by martensite demonstrated a higher amount of C content compared with retained austenite surrounded by the ferrite phase. Lath and discrete carbide particle precipitation was also observed inside martensite colonies, tying up C and reducing the total amount of C available for austenite stabilization. In addition, the partitioning of Mn and other minor elements was quantitatively investigated by correlating APT and SEM-EBSD. Furthermore, these techniques provide a robust methodology for analyzing nanoscale compositional partitioning in multiphase steels, TRIP steels in particular, which can be used to better explain their microstructure-mechanical property relationships.},
doi = {10.1007/s11837-018-2974-1},
journal = {JOM. Journal of the Minerals, Metals & Materials Society},
number = 829,
volume = 70,
place = {United States},
year = {2018},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

Figures / Tables:

Fig. 1. Fig. 1.: (a) SEM BSE image showing the overall microstructure of QP980 steel; (b) EBSD image of the same area identifying the distribution and orientation of RA in ferrite and martensite. (c–f) Distribution of Fe, C, Mn, and Si in the ferrite phase of QP980 steel from APT results.

Save / Share:

Works referenced in this record:

The "quenching and partitioning" process: background and recent progress
journal, December 2005


Carbon partitioning during quenching and partitioning heat treatment accompanied by carbide precipitation
journal, March 2015


Effect of Retained Austenite Stabilized via Quench and Partitioning on the Strain Hardening of Martensitic Steels
journal, July 2008

  • De Moor, E.; Lacroix, S.; Clarke, A. J.
  • Metallurgical and Materials Transactions A, Vol. 39, Issue 11
  • DOI: 10.1007/s11661-008-9609-z

Temperature Effects on the Deformation and Fracture of a Quenched-and-Partitioned Steel
conference, April 2013

  • Coryell, Jason; Savic, Vesna; Hector, Louis
  • SAE 2013 World Congress & Exhibition, SAE Technical Paper Series
  • DOI: 10.4271/2013-01-0610

Development of a Lightweight Third-Generation Advanced High-Strength Steel (3GAHSS) Vehicle Body Structure
journal, March 2018

  • Savic, Vesna; Hector, Louis; Singh, Harjinder
  • SAE International Journal of Materials and Manufacturing, Vol. 11, Issue 4
  • DOI: 10.4271/2018-01-1026

Quench and Partitioning Steel: A New AHSS Concept for Automotive Anti-Intrusion Applications
journal, September 2006

  • De Cooman, Bruno C.; Speer, John G.
  • steel research international, Vol. 77, Issue 9-10
  • DOI: 10.1002/srin.200606441

Combined Synchrotron X-Ray Diffraction and Digital Image Correlation Technique for Measurement of Austenite Transformation with Strain in TRIP-Assisted Steels
conference, April 2016

  • Poling, Whitney; Savic, Vesna; Hector, Louis
  • SAE 2016 World Congress and Exhibition, SAE Technical Paper Series
  • DOI: 10.4271/2016-01-0419

Design and development of precipitate strengthened advanced high strength steel for automotive application
journal, January 2013


Insights into microstructural interfaces in aerospace alloys characterised by atom probe tomography
journal, February 2016


Thermodynamics of carbon solubility in ferrite and vacancy formation in cementite in strained pearlite
journal, March 2013


Three-dimensional nanoscale characterisation of materials by atom probe tomography
journal, November 2016


In Situ Local Measurement of Austenite Mechanical Stability and Transformation Behavior in Third-Generation Advanced High-Strength Steels
journal, May 2018

  • Abu-Farha, Fadi; Hu, Xiaohua; Sun, Xin
  • Metallurgical and Materials Transactions A, Vol. 49, Issue 7
  • DOI: 10.1007/s11661-018-4660-x

The role of silicon in carbon partitioning processes in martensite/austenite microstructures
journal, August 2017


Elevated-temperature mechanical stability and transformation behavior of retained austenite in a quenching and partitioning steel
journal, September 2016


Nanoscale Cementite Precipitates and Comprehensive Strengthening Mechanism of Steel
journal, August 2011

  • Fu, Jie; Li, Guangqiang; Mao, Xinping
  • Metallurgical and Materials Transactions A, Vol. 42, Issue 12
  • DOI: 10.1007/s11661-011-0767-z

Overview of Mechanisms Involved During the Quenching and Partitioning Process in Steels
journal, April 2011

  • Santofimia, M. J.; Zhao, L.; Sietsma, J.
  • Metallurgical and Materials Transactions A, Vol. 42, Issue 12
  • DOI: 10.1007/s11661-011-0706-z

    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.