Effect of Precipitation on Cryogenic Toughness in Isothermally Aged Austenitic Stainless Steel

被引：0
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作者：
M. L. Saucedo-Muñoz
V. M. Lopez-Hirata
E. O. Avila-Davila
J. D. Villegas-Cardenas
J. L. Gonzalez-Velazquez
机构：
[1] Instituto Politecnico Nacional (ESIQUE),
[2] Instituto Tecnologico de Pachuca,undefined
[3] Universidad Politecnica,undefined
来源：
Metal Science and Heat Treatment | 2017年 / 58卷
关键词：
austenitic stainless steel; mechanical properties; aging; electron microscopy;
D O I：
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学科分类号：
摘要：
The effect of grain-boundary precipitates on cryogenic impact toughness of two corrosion steels (standard AISI 316 and a steel with a nitrogen additive) is studied. The steels are aged at 600 – 900°C with a hold of up to 1000 min. The KCV impact toughness at –196°C is determined. It is shown that the impact toughness of the nitrogen-containing steel decreases under cooling after the aging at 700 and 800°C more considerably than that of steel 316 after aging at 800 and 900°C. The causes of the embrittlement of the nitrogen-containing steel are determined.
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页码：707 / 711
页数：4
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