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

被引：9

作者：

Bala, Piotr ^{[1
,2
]}

Gorecki, Kamil ^{[3
]}

Dziurka, Rafal ^{[1
]}

Koziel, Tomasz ^{[1
]}

机构：

[1] AGH Univ Krakow, Fac Met Engn & Ind Comp Sci, Al A Mickiewicza 30, PL-30059 Krakow, Poland

[2] AGH Univ Krakow, Acad Ctr Mat & Nanotechnol, Al A Mickiewicza 30, PL-30059 Krakow, Poland

[3] Ctr Energy & Environm Technol, Inst Environm Technol, 17 Listopadu 2172-15, Ostrava 70800, Czech Republic

来源：

MATERIALS | 2023年 / 16卷 / 18期

关键词：

high-entropy alloys; heat treatment; aging; microstructure; mechanical properties; MECHANICAL-PROPERTIES; MICROSTRUCTURE; MULTICOMPONENT; BEHAVIOR; DESIGN; STRATEGIES; RESISTANCE; PHASES; BORON; FCC;

D O I：

10.3390/ma16186297

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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)3Ti phase caused by the Ti addition is comparable with the total effect of the Al and Ti addition, which caused the precipitation of (NiCo)3AlTi.

引用

页数：13

共 38 条

[1]

Askeland D.R., 2016, The Science and Engineering of Materials, V7th

[2]

Callister WD., 2007, Materials Science and Engineering-An introduction, DOI DOI 10.1002/PI.4990300228

[3] Multicomponent and High Entropy Alloys [J].

Cantor, Brian .

ENTROPY, 2014, 16 (09) :4749-4768

[4] Composition design of high entropy alloys using the valence electron concentration to balance strength and ductility [J].

Chen, Ruirun ;

Qin, Gang ;

Zheng, Huiting ;

Wang, Liang ;

Su, Yanqing ;

Chiu, YuLung ;

Ding, Hongsheng ;

Guo, Jingjie ;

Fu, Hengzhi .

ACTA MATERIALIA, 2018, 144 :129-137

[5] Microstructure and electrochemical properties of high entropy alloys - a comparison with type-304 stainless steel [J].

Chen, YY ;

Duval, T ;

Hung, UD ;

Yeh, JW ;

Shih, HC .

CORROSION SCIENCE, 2005, 47 (09) :2257-2279

[6]

Courtney TH., 1990, MECH BEHAV MAT

[7] Effect of Cr addition on the alloying behavior, microstructure and mechanical properties of twinned CoFeNiAl0.5Ti0.5 alloy [J].

Fu, Zhiqiang ;

Chen, Weiping ;

Fang, Sicong ;

Li, Xiaomei .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 597 :204-211

[8] Cryogenic behaviour of the Al5Ti5Co35Ni35Fe20 multi-principal component alloy [J].

Gorecki, K. ;

Bala, P. ;

Bednarczyk, W. ;

Kawalko, J. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 745 :346-352

[9] The Influence of Cooling Rate During Crystallization on the Effective Partitioning Coefficient in High-Entropy Alloys from Al-Ti-Co-Ni-Fe System [J].

Gorecki, Kamil ;

Bala, Piotr ;

Cios, Grzegorz ;

Koziel, Tomasz ;

Stepien, Milena ;

Wieczerzak, Krzysztof .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2016, 47A (07) :3257-3262

[10] Effect of valence electron concentration on stability of fcc or bcc phase in high entropy alloys [J].

Guo, Sheng ;

Ng, Chun ;

Lu, Jian ;

Liu, C. T. .

JOURNAL OF APPLIED PHYSICS, 2011, 109 (10)

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