Jung Woo-Sang Hong Suk-Woo Song Sang-Min Kwun, Sook-In Chung Soon-Hyo 2024-01-21T02:02:55Z 2024-01-21T02:02:55Z 2021-09-01 2006-12 1001-0521 https://pubs.kist.re.kr/handle/201004/134932 The segregation and diffusion of boron during heat treatments were studied. The influence of boron contents, aging time and applied stress on FeMo2B2 formation was also studied. Finally, the effects of boron contents and FeMo2B2 formation on the high temperature strength were studied. Boron. atoms were segregated to prior austenite grain boundary during normalizing treatment. And these boron atoms were slowly diffused into the grain interior during tempering and aging at 700 degrees C. The FeMo2B2 phase was only formed after 1, 000 h aging at 700 degrees C in alloy containing 196 ppm boron. The formation of FeMo2B2 phase is accelerated by the applied stress. It was expected that the formation of FeMo2B2 is closely related to the redistribution of boron atoms. The tensile strengths at 700 degrees C are increased with the increase of boron contents. However, the formation of FeMo2B2 phase results in lower tensile strength. English NONFERROUS METALS SOC CHINA GRAIN-BOUNDARY SEGREGATION AUSTENITIC STAINLESS-STEEL NONEQUILIBRIUM SEGREGATION HIGH-TEMPERATURE BEHAVIOR MICROSTRUCTURE SOLUTE CREEP Formation of FeMo2B2 phase in boron containing 9Cr-1.5Mo ferritic steels Article 10.1016/S1001-0521(08)60084-4 1 RARE METALS, v.25, pp.213 - 219 RARE METALS 25 213 219 scie scopus 000244766500044 2-s2.0-42949091804 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article; Proceedings Paper GRAIN-BOUNDARY SEGREGATION AUSTENITIC STAINLESS-STEEL NONEQUILIBRIUM SEGREGATION HIGH-TEMPERATURE BEHAVIOR MICROSTRUCTURE SOLUTE CREEP 9Cr-1.5Mo ferritic steels precipitation behavior boron effect FeMo2B2 phase tensile strength