Effect of aluminum on high temperature tensile property of 310S heat- resistant steel

doi:10.13228/j.boyuan.issn1001- 0963.20140459

Journal of Iron and Steel Research ›› 2015, Vol. 27 ›› Issue (7) : 46-51. DOI: 10.13228/j.boyuan.issn1001- 0963.20140459

XUE Pan- long,LA Pei- qing,LIU Hui,MENG Qian,WEI Yu- peng

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Abstract

310S heat- resistant steels with mass fractions of Al of 0%, 2% and 4% were prepared using WS- 4 non- consumption vacuum arc furnace. Then these ingots were hot rolled in the range of 950-1250℃. The mechanical properties at 800℃ were measured by tensile tests. The fracture surfaces were investigated by SEM. The results show that the steels with mass fractions of Al of 0% and 2% have almost the same strength of about 210MPa, and the steel with mass fraction of Al of 4% has the best tensile properties at 800℃. Very different sizes and depths of dimples can be observed on the tensile fracture surfaces of the three steels, which indicates that the fracture mechanisms of the steels are typical intergranular fracture. The volume fractions of dimples in the steels increase with the increases of Al contents.

Key words

310s heat-resistant steel / hot-rolling / aluminum element / mechanical properties of high temperature

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XUE Pan- long,LA Pei- qing,LIU Hui,MENG Qian,WEI Yu- peng. Effect of aluminum on high temperature tensile property of 310S heat- resistant steel[J]. Journal of Iron and Steel Research, 2015, 27(7): 46-51 https://doi.org/10.13228/j.boyuan.issn1001- 0963.20140459

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