Effects of Al Content on Microstructure and Mechanical Properties of Casting 310S Stainless Steel

Song Yi; La Peiqing; Meng Qian; Sheng Jie; Shi Yu; Guo Xin

doi:10.15980/j.tzzz.2018.06.004

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Effects of Al Content on Microstructure and Mechanical Properties of Casting 310S Stainless Steel
Vol. 38, Issue 6, Pages: 592-595(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.06.004

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[1]宋伊,喇培清,孟倩,盛捷,石玉,郭鑫.Al对铸造310S不锈钢组织和力学性能的影响[J].特种铸造及有色合金,2018,38(06):592-595.

Song Yi, La Peiqing, Meng Qian, et al. Effects of Al Content on Microstructure and Mechanical Properties of Casting 310S Stainless Steel. [J]. Special Casting & Nonferrous Alloys 38(6):592-595(2018)
[1]宋伊,喇培清,孟倩,盛捷,石玉,郭鑫.Al对铸造310S不锈钢组织和力学性能的影响[J].特种铸造及有色合金,2018,38(06):592-595. DOI： 10.15980/j.tzzz.2018.06.004.

Song Yi, La Peiqing, Meng Qian, et al. Effects of Al Content on Microstructure and Mechanical Properties of Casting 310S Stainless Steel. [J]. Special Casting & Nonferrous Alloys 38(6):592-595(2018) DOI： 10.15980/j.tzzz.2018.06.004.

摘要

利用XRD、OM、EPMA和SEM研究不同Al含量下310S不锈钢的显微组织

并测试其力学性能。结果表明

随着铸态310S不锈钢中Al含量的增加

Cr和C元素在铁素体中的富集明显

固溶后310S不锈钢中Cr和C的化合物溶解。另外

合金中铁素体的体积分数随Al含量的增加而增加

相同Al含量下固溶后合金中的铁素体体积分数高于铸态的。Al含量为2%时

310S不锈钢的综合力学性能最好。固溶后合金强度明显高于铸态的

而塑性降低不明显。

Abstract

Microstructure evolution of 310 Sstainless steel with different Al content was observed by XRD、OM、EPMA and SEM

and mechanical properties were measured by tensile tests.The results reveal that the enrichment of Cr and C element is more serious with the increase of Al content at the cast state

however

the Cr element and carbide are dissolved during solution treatment.In addition

the volume fraction of the ferrite is increased with the increase of Al content

and the ferrite volume fraction of solid-solution 310 Sis higher than that of the cast state ones with the same Al content.When the Al content in the 310 Sis 2%

the steel has a desirable combination of strength and ductility.And the strength of solid-solution state is higher than that of the cast state

while the elongation is decreased slightly.