Comparing Microstructures and Tensile Properties of Intercritically Annealed and Quenched-Tempered 1.7Ni–1.5Cu–0.5Mo–0.2C Powder Metallurgy Steels
- Авторлар: Güral A.1, Başak H.2, Türkan M.3
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Мекемелер:
- Department of Metallurgical and Materials Engineering
- Department of Industrial Design Engineering, Technology Faculty
- Graduate School of Natural and Applied Sciences
- Шығарылым: Том 119, № 1 (2018)
- Беттер: 60-68
- Бөлім: Strength and Plasticity
- URL: https://journals.rcsi.science/0031-918X/article/view/167370
- DOI: https://doi.org/10.1134/S0031918X18010027
- ID: 167370
Дәйексөз келтіру
Аннотация
The aim of this study was to compare the influence of intercritical quenching (IQ), step quenching (SQ) and quenching plus tempering (QT) heat treatments on the microstructure and tensile properties of 1.7Ni–1.5Cu–0.5Mo–0.2C pre-alloyed powder metallurgy (P/M) steels. In the microstructures of the IQ and SQ specimens partial martensite having Ni-rich phases formed up in the soft ferritic matrix. It was observed that unlike Mo, a Cu alloying element dissolved homogeneously in the specimens. The martensite volume fraction (MVF) in the SQ specimens was higher than that in the IQ specimens. It was found that macrohardness, yield and tensile strengths increased, whereas microhardness of ferrite and elongation decreased with increasing MVF. However, with this increase, microhardness values of martensite phases decreased in the IQ specimen, while they increased in SQ specimens. It was observed that the yield, tensile, and elongation values of the QT specimens were lower than those of all intercritically annealed specimens having the same hardness values.
Авторлар туралы
Ahmet Güral
Department of Metallurgical and Materials Engineering
Хат алмасуға жауапты Автор.
Email: agural@gazi.edu.tr
Түркия, Ankara
Hüdayim Başak
Department of Industrial Design Engineering, Technology Faculty
Email: agural@gazi.edu.tr
Түркия, Ankara
Mustafa Türkan
Graduate School of Natural and Applied Sciences
Email: agural@gazi.edu.tr
Түркия, Ankara