Effect of hot pressing and hot isostatic pressing on the microstructure, hardness, and wear behavior of nickel

Carola Martínez; Francisco Briones; Claudio Aguilar; Nicolás Araya; Iñigo Iturriza; Izabel Machado; Paula Rojas

doi:10.1016/j.matlet.2020.127944

Effect of hot pressing and hot isostatic pressing on the microstructure, hardness, and wear behavior of nickel

Carola Martínez, Francisco Briones, Claudio Aguilar, Nicolás Araya, Iñigo Iturriza, Izabel Machado, Paula Rojas

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

9 Citas (Scopus)

Resumen

Nanocrystalline Ni (Ni_nc) obtained by mechanical milling may present improved mechanical properties paired with high abrasion resistance. Different sintering processes were used to consolidate Nanocrystaline Ni: hot pressed (HP) and hot-isostatic pressed (HIP). The microstructure, mechanical properties, and tribological were evaluated to compare the processes. X-ray diffraction patterns showed that HIP-consolidated specimens had larger crystallite sizes and 37% less microstrain when compared to the HP specimens. The nanohardness of the HIP specimens was also carried out and it was 50% lower than that of HP specimens, whereas its coefficient of friction found was 25% higher. These results show the advantages of the HP process over the HIP since the high pressure. The low sintering temperature of HP inhibited the grain growth, which leads excellent mechanical and tribological properties of Ni.

Idioma original	Inglés
Número de artículo	127944
Publicación	Materials Letters
Volumen	273
DOI	https://doi.org/10.1016/j.matlet.2020.127944
Estado	Publicada - 15 ago. 2020
Publicado de forma externa	Sí

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title = "Effect of hot pressing and hot isostatic pressing on the microstructure, hardness, and wear behavior of nickel",

abstract = "Nanocrystalline Ni (Ninc) obtained by mechanical milling may present improved mechanical properties paired with high abrasion resistance. Different sintering processes were used to consolidate Nanocrystaline Ni: hot pressed (HP) and hot-isostatic pressed (HIP). The microstructure, mechanical properties, and tribological were evaluated to compare the processes. X-ray diffraction patterns showed that HIP-consolidated specimens had larger crystallite sizes and 37% less microstrain when compared to the HP specimens. The nanohardness of the HIP specimens was also carried out and it was 50% lower than that of HP specimens, whereas its coefficient of friction found was 25% higher. These results show the advantages of the HP process over the HIP since the high pressure. The low sintering temperature of HP inhibited the grain growth, which leads excellent mechanical and tribological properties of Ni.",

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author = "Carola Mart{\'i}nez and Francisco Briones and Claudio Aguilar and Nicol{\'a}s Araya and I{\~n}igo Iturriza and Izabel Machado and Paula Rojas",

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T1 - Effect of hot pressing and hot isostatic pressing on the microstructure, hardness, and wear behavior of nickel

AU - Martínez, Carola

AU - Briones, Francisco

AU - Aguilar, Claudio

AU - Araya, Nicolás

AU - Iturriza, Iñigo

AU - Machado, Izabel

AU - Rojas, Paula

PY - 2020/8/15

Y1 - 2020/8/15

N2 - Nanocrystalline Ni (Ninc) obtained by mechanical milling may present improved mechanical properties paired with high abrasion resistance. Different sintering processes were used to consolidate Nanocrystaline Ni: hot pressed (HP) and hot-isostatic pressed (HIP). The microstructure, mechanical properties, and tribological were evaluated to compare the processes. X-ray diffraction patterns showed that HIP-consolidated specimens had larger crystallite sizes and 37% less microstrain when compared to the HP specimens. The nanohardness of the HIP specimens was also carried out and it was 50% lower than that of HP specimens, whereas its coefficient of friction found was 25% higher. These results show the advantages of the HP process over the HIP since the high pressure. The low sintering temperature of HP inhibited the grain growth, which leads excellent mechanical and tribological properties of Ni.

AB - Nanocrystalline Ni (Ninc) obtained by mechanical milling may present improved mechanical properties paired with high abrasion resistance. Different sintering processes were used to consolidate Nanocrystaline Ni: hot pressed (HP) and hot-isostatic pressed (HIP). The microstructure, mechanical properties, and tribological were evaluated to compare the processes. X-ray diffraction patterns showed that HIP-consolidated specimens had larger crystallite sizes and 37% less microstrain when compared to the HP specimens. The nanohardness of the HIP specimens was also carried out and it was 50% lower than that of HP specimens, whereas its coefficient of friction found was 25% higher. These results show the advantages of the HP process over the HIP since the high pressure. The low sintering temperature of HP inhibited the grain growth, which leads excellent mechanical and tribological properties of Ni.

KW - COF

KW - Nanoindentation

KW - Nickel

KW - Wear

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VL - 273

JO - Materials Letters

JF - Materials Letters

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Effect of hot pressing and hot isostatic pressing on the microstructure, hardness, and wear behavior of nickel

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