Effect of Heat Treatment Temperature on Microstructure and Properties of PM Borated Stainless Steel Prepared by Hot Isostatic Pressing
| Autor: | Xuanhui Qu, Tiejun Wang, Qilu Ge, Yanbin Pei |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science Scanning electron microscope Alloy microstructure strength and plasticity engineering.material Article Hot isostatic pressing Powder metallurgy Ultimate tensile strength General Materials Science Quenching Austenite Microscopy QC120-168.85 heat treatment borated stainless steel field-emission scanning electron microscopy with energy-dispersive spectroscopy QH201-278.5 Metallurgy Engineering (General). Civil engineering (General) Microstructure hot isostatic pressing TK1-9971 powder metallurgy Descriptive and experimental mechanics engineering Electrical engineering. Electronics. Nuclear engineering TA1-2040 |
| Zdroj: | Materials Volume 14 Issue 16 Materials, Vol 14, Iss 4646, p 4646 (2021) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14164646 |
| Popis: | Borated stainless steel (BSS) with a boron content of 1.86% was prepared by a powder metallurgy process incorporating atomization and hot isostatic pressing. After solution quenching at 900–1200 °C, the phase composition of the alloy was studied by quantitative X-ray diffraction phase analysis. The microstructure, fracture morphology, and distributions of boron, chromium, and iron in grains of the alloy were analyzed by field-emission scanning electron microscopy with secondary electron and energy-dispersive spectroscopy. After the coupons were heat treated at different temperatures ranging from 900 to 1200 °C, the strength and plasticity were tested, and the fracture surfaces were analyzed. Undergoing heat treatment at different temperatures, the phases of the alloy were austenite and Fe1.1Cr0.9B0.9 phase. Since the diffusion coefficients of Cr, Fe, and B varied at different temperatures, the distribution of elements in the alloy was not uniform. The alloy with good strength and plasticity can be obtained when the heat treatment temperature of alloy ranged from 1000 to 1150 °C while the tensile strength was about 800 MPa, with the elongation standing about 20%. |
| Databáze: | OpenAIRE |
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