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Hot Deformation Characteristics and 3-D Processing Map of a High-Titanium Nb-Micro-alloyed Steel.

作者信息

Qian Pingping, Tang Zhenghua, Wang Li, Siyasiya Charles W

机构信息

Department of Materials Science and Engineering, Sichuan University, Chengdu 610000, China.

Department of Materials Science and Metallurgical Engineering, University of Pretoria, Tshwane 999136, South Africa.

出版信息

Materials (Basel). 2020 Mar 25;13(7):1501. doi: 10.3390/ma13071501.

DOI:10.3390/ma13071501
PMID:32218291
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7177842/
Abstract

Hot deformation behavior of a high-titanium Nb-micro-alloyed steel was investigated by conducting hot compression tests at the temperature of 900-1100 °C and the strain rate of 0.005-10 s. Using a sinh type constitutive equation, the apparent activation energy of the examined steel was 373.16 kJ/mol and the stress exponent was 6.059. The relations between Zener-Hollomon parameters versus peak stress (strain) or steady-state stress (strain) were successfully established via the Avrami equation. The dynamic recrystallization kinetics model of the examined steel was constructed and the validity was confirmed based on the experimental results. The 3-D atomic distribution maps illustrated that strain can significantly affect the values of power dissipation efficiency and the area of instability domains. The 3-D processing maps based on a dynamic material model at the strains of 0.2, 0.4, 0.6 and 0.8 were established. Based on traditional and 3-D processing maps and microstructural evaluation, the optimum parameter of for a high-titanium Nb-micro-alloyed steel was determined to be 1000-1050 °C/0.1-1 s.

摘要
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/b99cfcf20880/materials-13-01501-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/c5f2e5efba85/materials-13-01501-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/b902f8bd44e3/materials-13-01501-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/a89a8715711b/materials-13-01501-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/1487a6007247/materials-13-01501-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/448bb59318e1/materials-13-01501-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/a6dd51a48a77/materials-13-01501-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/3f172f2b28e1/materials-13-01501-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/beb4c9f49e1f/materials-13-01501-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/6c087358600c/materials-13-01501-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/26a633d87007/materials-13-01501-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/36981408d11d/materials-13-01501-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/c60873a57744/materials-13-01501-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/fa24266a532f/materials-13-01501-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/5e5b55449352/materials-13-01501-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/b99cfcf20880/materials-13-01501-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/c5f2e5efba85/materials-13-01501-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/b902f8bd44e3/materials-13-01501-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/a89a8715711b/materials-13-01501-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/1487a6007247/materials-13-01501-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/448bb59318e1/materials-13-01501-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/a6dd51a48a77/materials-13-01501-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/3f172f2b28e1/materials-13-01501-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/beb4c9f49e1f/materials-13-01501-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/6c087358600c/materials-13-01501-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/26a633d87007/materials-13-01501-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/36981408d11d/materials-13-01501-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/c60873a57744/materials-13-01501-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/fa24266a532f/materials-13-01501-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/5e5b55449352/materials-13-01501-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d33/7177842/b99cfcf20880/materials-13-01501-g015.jpg

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本文引用的文献

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