Formation of Fe-Cu-Ni-Sn-VN Nanocrystalline Matrix by Vacuum Hot Pressing for Diamond-Containing Composite. Mechanical and Tribological Properties
- Авторлар: Mechnik V.1, Bondarenko N.1, Kolodnitskyi V.1, Zakiev V.2, Zakiev I.2, Ignatovich S.2, Dub S.1, Kuzin N.3
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Мекемелер:
- Bakul Institute for Superhard Materials
- National Aviation University
- Lviv Scientific Research Institute of Forensic Expertise
- Шығарылым: Том 41, № 6 (2019)
- Беттер: 388-401
- Бөлім: Production, Structure, Properties
- URL: https://journals.rcsi.science/1063-4576/article/view/186647
- DOI: https://doi.org/10.3103/S1063457619060030
- ID: 186647
Дәйексөз келтіру
Аннотация
The processes of structure formation, mechanical and tribological properties under vacuum hot pressing of a blend of powders of iron, copper, nickel and tin with a dispersion of 5–50 µm with the addition of a nanopowder of vanadium nitride depending on temperature are described. It was found that an increase in sintering temperature from 800 to 1000°C leads to grinding of ferrite grains to 20–400 nm, the release of primary (d = 10–100 nm) and secondary (d ≤ 10 nm) VN grains and an increase in hardness from 3.75 to 5.37 GPa and H/E parameters from 0.021 to 0.043 and H3/E2 from 1.70 to 9.91 MPa, a decrease in the elastic modulus from 176 to 125 GPa and a friction force from 250 to 180 mN, a decrease in speed wear from 8.15 × 10−4 to 1.79 × 10−4 mm3·N−1·m−1. The mechanism of grain refinement and the improvement of physical and mechanical properties is due to α → γ → α transformations occurring under conditions of VN dissolution in α-Fe and subsequent cooling.
Негізгі сөздер
Авторлар туралы
V. Mechnik
Bakul Institute for Superhard Materials
Хат алмасуға жауапты Автор.
Email: vlad.me4nik@ukr.net
Украина, vul. Avtozavods’ka 2, Kyiv, 04074
N. Bondarenko
Bakul Institute for Superhard Materials
Email: stmj@ism.kiev.ua
Украина, vul. Avtozavods’ka 2, Kyiv, 04074
V. Kolodnitskyi
Bakul Institute for Superhard Materials
Хат алмасуға жауапты Автор.
Email: stmj@ism.kiev.ua
Украина, vul. Avtozavods’ka 2, Kyiv, 04074
V. Zakiev
National Aviation University
Email: stmj@ism.kiev.ua
Украина, Kyiv
I. Zakiev
National Aviation University
Email: stmj@ism.kiev.ua
Украина, Kyiv
S. Ignatovich
National Aviation University
Email: stmj@ism.kiev.ua
Украина, Kyiv
S. Dub
Bakul Institute for Superhard Materials
Email: stmj@ism.kiev.ua
Украина, vul. Avtozavods’ka 2, Kyiv, 04074
N. Kuzin
Lviv Scientific Research Institute of Forensic Expertise
Email: stmj@ism.kiev.ua
Украина, Lviv