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Title: In situ high-energy X-ray diffraction investigation of the micromechanical behavior of Fe-0.1C-10Mn-0/2Al steel at room and elevated temperatures

Abstract

The micromechanical behavior of medium-Mn transformation-induced-plasticity (TRIP) steels with nominal chemical compositions of Fe-0.1C-10Mn (mass%) (0Al steel) and Fe-0.1C-10Mn-2Al (mass%) (2Al steel) fabricated by intercritical annealing 600 degrees C for 1 h and 650 degrees C for 1 h, respectively, was investigated using in situ high-energy X-ray diffraction (HE-XRD) with uniaxial tensile tests at 25 degrees C and 100 degrees C. We found that Liiders band propagation promoted lower volume fraction of austenite transformation to martensite in 0Al steel than 2Al steel at 25 degrees C while higher volume fraction of austenite transformation to martensite in 0Al steel than 2Al steel at 100 degrees C. Portevin-Le Chatelier (PLC) band propagation promoted higher volume fraction of austenite transformation to martensite in 0Al steel than 2Al steel during deformation at 25 degrees C and 100 degrees C. Moreover, the addition of Al obviously suppresses the formation of intermediate epsilon martensite during tensile deformation, thus the zigzag change in lattice strain of austenite was completely depressed in 2Al steel. Due to the controlled stability of metastable austenite, the 2Al steel demonstrated the best combination of ultimate tensile strength and total elongation at 25 degrees C.

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [1]
  1. Univ. of Science and Technology Beijing, Beijing (China). State Key Lab. for Advanced Metals and Materials
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS), X-ray Science Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Key Research and Development Program of China; National Natural Science Foundation of China (NNSFC); Fundamental Research Funds for the Central Universities; Chinese Academy of Sciences (CAS) - State Key Laboratory for Advanced Metals and Materials; USDOE Office of Science - Office of Basic Energy Sciences - Scientific User Facilities Division; USDOE
OSTI Identifier:
1480850
Alternate Identifier(s):
OSTI ID: 1496336
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Additional Journal Information:
Journal Volume: 729; Journal Issue: C; Journal ID: ISSN 0921-5093
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; austenite stability; high-energy x-ray diffraction; load partitioning; medium-Mn TRIP steel

Citation Formats

Zhang, Minghe, Tan, Qing, Ding, Jie, Chen, Haiyang, Guo, Fangmin, Ren, Yang, and Wang, Yan-Dong. In situ high-energy X-ray diffraction investigation of the micromechanical behavior of Fe-0.1C-10Mn-0/2Al steel at room and elevated temperatures. United States: N. p., 2018. Web. doi:10.1016/j.msea.2018.05.102.
Zhang, Minghe, Tan, Qing, Ding, Jie, Chen, Haiyang, Guo, Fangmin, Ren, Yang, & Wang, Yan-Dong. In situ high-energy X-ray diffraction investigation of the micromechanical behavior of Fe-0.1C-10Mn-0/2Al steel at room and elevated temperatures. United States. doi:10.1016/j.msea.2018.05.102.
Zhang, Minghe, Tan, Qing, Ding, Jie, Chen, Haiyang, Guo, Fangmin, Ren, Yang, and Wang, Yan-Dong. Sat . "In situ high-energy X-ray diffraction investigation of the micromechanical behavior of Fe-0.1C-10Mn-0/2Al steel at room and elevated temperatures". United States. doi:10.1016/j.msea.2018.05.102. https://www.osti.gov/servlets/purl/1480850.
@article{osti_1480850,
title = {In situ high-energy X-ray diffraction investigation of the micromechanical behavior of Fe-0.1C-10Mn-0/2Al steel at room and elevated temperatures},
author = {Zhang, Minghe and Tan, Qing and Ding, Jie and Chen, Haiyang and Guo, Fangmin and Ren, Yang and Wang, Yan-Dong},
abstractNote = {The micromechanical behavior of medium-Mn transformation-induced-plasticity (TRIP) steels with nominal chemical compositions of Fe-0.1C-10Mn (mass%) (0Al steel) and Fe-0.1C-10Mn-2Al (mass%) (2Al steel) fabricated by intercritical annealing 600 degrees C for 1 h and 650 degrees C for 1 h, respectively, was investigated using in situ high-energy X-ray diffraction (HE-XRD) with uniaxial tensile tests at 25 degrees C and 100 degrees C. We found that Liiders band propagation promoted lower volume fraction of austenite transformation to martensite in 0Al steel than 2Al steel at 25 degrees C while higher volume fraction of austenite transformation to martensite in 0Al steel than 2Al steel at 100 degrees C. Portevin-Le Chatelier (PLC) band propagation promoted higher volume fraction of austenite transformation to martensite in 0Al steel than 2Al steel during deformation at 25 degrees C and 100 degrees C. Moreover, the addition of Al obviously suppresses the formation of intermediate epsilon martensite during tensile deformation, thus the zigzag change in lattice strain of austenite was completely depressed in 2Al steel. Due to the controlled stability of metastable austenite, the 2Al steel demonstrated the best combination of ultimate tensile strength and total elongation at 25 degrees C.},
doi = {10.1016/j.msea.2018.05.102},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
number = C,
volume = 729,
place = {United States},
year = {2018},
month = {5}
}

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