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The Effect of Heat Treatment on Damping Capacity and Mechanical Properties of CuAlNi Shape Memory Alloy

This paper discusses the effect of different heat treatment procedures on the microstructural characteristics, damping capacities, and mechanical properties of CuAlNi shape memory alloys (SMA). The investigation was performed on samples in the as-cast state and heat treated states (solution annealin...

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Autores principales: Ivanić, Ivana, Kožuh, Stjepan, Grgurić, Tamara Holjevac, Vrsalović, Ladislav, Gojić, Mirko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8911558/
https://www.ncbi.nlm.nih.gov/pubmed/35269055
http://dx.doi.org/10.3390/ma15051825
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author Ivanić, Ivana
Kožuh, Stjepan
Grgurić, Tamara Holjevac
Vrsalović, Ladislav
Gojić, Mirko
author_facet Ivanić, Ivana
Kožuh, Stjepan
Grgurić, Tamara Holjevac
Vrsalović, Ladislav
Gojić, Mirko
author_sort Ivanić, Ivana
collection PubMed
description This paper discusses the effect of different heat treatment procedures on the microstructural characteristics, damping capacities, and mechanical properties of CuAlNi shape memory alloys (SMA). The investigation was performed on samples in the as-cast state and heat treated states (solution annealing at 885 °C/60′/H(2)O and after tempering at 300 °C/60′/H(2)O). The microstructure of the samples was examined by light microscopy (LM) and scanning electron microscopy (SEM) equipped with a device for energy dispersive spectrometry (EDS) analysis. Light and scanning electron microscopy showed martensitic microstructure in all investigated samples. However, the changes in microstructure due to heat treatment by the presence of two types of martensite phases (β(1′) and γ(1′)) influenced alloy damping and mechanical properties by enhancing alloy damping characteristics. Heat treatment procedure reduced the alloys’ mechanical properties and increased hardness of the alloy. Fractographic analysis of the alloy showed a transgranular type of fracture in samples after casting. After solution annealing, two types of fracture mechanisms can be noticed, transgranular and intergranular, while in tempered samples, mostly an intergranular type of fracture exists.
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spelling pubmed-89115582022-03-11 The Effect of Heat Treatment on Damping Capacity and Mechanical Properties of CuAlNi Shape Memory Alloy Ivanić, Ivana Kožuh, Stjepan Grgurić, Tamara Holjevac Vrsalović, Ladislav Gojić, Mirko Materials (Basel) Article This paper discusses the effect of different heat treatment procedures on the microstructural characteristics, damping capacities, and mechanical properties of CuAlNi shape memory alloys (SMA). The investigation was performed on samples in the as-cast state and heat treated states (solution annealing at 885 °C/60′/H(2)O and after tempering at 300 °C/60′/H(2)O). The microstructure of the samples was examined by light microscopy (LM) and scanning electron microscopy (SEM) equipped with a device for energy dispersive spectrometry (EDS) analysis. Light and scanning electron microscopy showed martensitic microstructure in all investigated samples. However, the changes in microstructure due to heat treatment by the presence of two types of martensite phases (β(1′) and γ(1′)) influenced alloy damping and mechanical properties by enhancing alloy damping characteristics. Heat treatment procedure reduced the alloys’ mechanical properties and increased hardness of the alloy. Fractographic analysis of the alloy showed a transgranular type of fracture in samples after casting. After solution annealing, two types of fracture mechanisms can be noticed, transgranular and intergranular, while in tempered samples, mostly an intergranular type of fracture exists. MDPI 2022-02-28 /pmc/articles/PMC8911558/ /pubmed/35269055 http://dx.doi.org/10.3390/ma15051825 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ivanić, Ivana
Kožuh, Stjepan
Grgurić, Tamara Holjevac
Vrsalović, Ladislav
Gojić, Mirko
The Effect of Heat Treatment on Damping Capacity and Mechanical Properties of CuAlNi Shape Memory Alloy
title The Effect of Heat Treatment on Damping Capacity and Mechanical Properties of CuAlNi Shape Memory Alloy
title_full The Effect of Heat Treatment on Damping Capacity and Mechanical Properties of CuAlNi Shape Memory Alloy
title_fullStr The Effect of Heat Treatment on Damping Capacity and Mechanical Properties of CuAlNi Shape Memory Alloy
title_full_unstemmed The Effect of Heat Treatment on Damping Capacity and Mechanical Properties of CuAlNi Shape Memory Alloy
title_short The Effect of Heat Treatment on Damping Capacity and Mechanical Properties of CuAlNi Shape Memory Alloy
title_sort effect of heat treatment on damping capacity and mechanical properties of cualni shape memory alloy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8911558/
https://www.ncbi.nlm.nih.gov/pubmed/35269055
http://dx.doi.org/10.3390/ma15051825
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