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High temperature sintering and its effect on dimensional and geometrical precision and on microstructure of low alloyed steels
Powder Metallurgy ( IF 1.4 ) Pub Date : 2020-02-11 , DOI: 10.1080/00325899.2020.1723883
D. Toledo 1 , I. Cristofolini 1 , A. Molinari 1 , V. Arnhold 2 , V. Kruzhanov 3 , P. Vervoort 4 , M. Dougan 5 , L. Wimbert 6 , V. Bonnefoy 7 , R. Hellein 8 , H. Weber 9 , F. Baumgärtner 10 , J. Sicre 11 , C. Larsson 12 , M. Schneider 13
Affiliation  

ABSTRACT The effect of high-temperature sintering (1180°C and 1250°C) on the dimensional stability, geometrical precision, density and microstructure of rings made of five different low alloy steels was studied. Density and dimensional shrinkage slightly increase with temperature, but the dimensional and the geometrical precision of parts, do not depend on sintering temperature. Sintering temperature maybe therefore increased up to 1250°C without impairing the dimensional and geometrical precision of the investigated rings. An estimation of the effect of the high sintering temperature on tensile properties is presented, based on the microstructure and on the fraction of the load-bearing section. A significant increase in both tensile strength and tensile ductility may be expected, in particular when the sintering temperature is increased up to 1250°C.

中文翻译:

高温烧结及其对尺寸和几何精度以及低合金钢显微组织的影响

摘要 研究了高温烧结(1180°C 和 1250°C)对五种不同低合金钢制成的环的尺寸稳定性、几何精度、密度和微观结构的影响。密度和尺寸收缩随温度略有增加,但零件的尺寸和几何精度与烧结温度无关。因此,在不影响所研究环的尺寸和几何精度的情况下,烧结温度可以提高到 1250°C。根据微观结构和承载部分的分数,对高烧结温度对拉伸性能的影响进行了评估。可以预期拉伸强度和拉伸延展性都会显着增加,
更新日期:2020-02-11
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