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The Effect of Al and Ti Additions on Solid Solution Strengthening and Precipitation Hardening in CoNiFe Medium-Entropy Alloys.

作者信息

Bała Piotr, Górecki Kamil, Dziurka Rafał, Kozieł Tomasz

机构信息

Faculty of Metals Engineering and Industrial Computer Science, AGH University of Krakow, Al. A. Mickiewicza 30, 30-059 Krakow, Poland.

Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Al. A. Mickiewicza 30, 30-059 Krakow, Poland.

出版信息

Materials (Basel). 2023 Sep 20;16(18):6297. doi: 10.3390/ma16186297.

DOI:10.3390/ma16186297
PMID:37763574
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10532893/
Abstract

The effect of Al and Ti additions on the microstructure and properties of CoNiFe alloys was studied in this paper. The investigations were conducted on four specially designed and produced arc furnace alloys (from 3 to 5 components, with medium to high entropy). Samples in various states were analyzed, i.e., as-cast, after homogenization, after solution heat treatment, and after solution heat treatment and aging. The obtained samples were characterized by: SEM observations, EDS, XRD, TEM analyses, and finally, hardness measurements. The solid solution strengthening coming from the addition of 5 at. pct. Al was negligible, while the effect from the 5 at. pct. of Ti addition was significant. The precipitation hardening effect related to the presence of the (CoNi)Ti phase caused by the Ti addition is comparable with the total effect of the Al and Ti addition, which caused the precipitation of (NiCo)AlTi.

摘要
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/03b6186091f3/materials-16-06297-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/b609066c074a/materials-16-06297-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/395ae7c0658d/materials-16-06297-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/b2f4a97088c4/materials-16-06297-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/4feb076bf5ea/materials-16-06297-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/a8badc88afb5/materials-16-06297-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/03b6186091f3/materials-16-06297-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/b609066c074a/materials-16-06297-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/395ae7c0658d/materials-16-06297-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/b2f4a97088c4/materials-16-06297-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/4feb076bf5ea/materials-16-06297-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/a8badc88afb5/materials-16-06297-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f96/10532893/03b6186091f3/materials-16-06297-g006.jpg

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