1.浙江工贸职业技术学院光电制造学院,温州 325000
2.吉林大学材料科学与工程学院,长春 130025
徐临超(1984—),男,硕士,讲师; E-mail:xlc@zjitc.edu.cn
王文权(1971—),男,博士,教授; E-mail:1900508539@qq.com
收稿:2024-03-09,
纸质出版:2024-11-30
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徐临超,叶赛男,王文权等.热处理工艺对锻造430F铁素体不锈钢组织和性能的影响[J].特殊钢,2024,45(06):83-87.
Xu Linchao,Ye Sainan,Wang Wenquan,et al.Effect of Heat Treatment Process on Microstructure and Properties of Forged 430F Ferritic Stainless Steel[J].Special Steel,2024,45(06):83-87.
徐临超,叶赛男,王文权等.热处理工艺对锻造430F铁素体不锈钢组织和性能的影响[J].特殊钢,2024,45(06):83-87. DOI: 10.20057/j.1003-8620.2024-00049.
Xu Linchao,Ye Sainan,Wang Wenquan,et al.Effect of Heat Treatment Process on Microstructure and Properties of Forged 430F Ferritic Stainless Steel[J].Special Steel,2024,45(06):83-87. DOI: 10.20057/j.1003-8620.2024-00049.
对轧制态430F铁素体不锈钢进行锻造及不同的锻后热处理工艺。通过对热处理后试验钢的金相组织、显微硬度、拉伸性能、断口分析等的研究探索了不同热处理工艺对锻后430F不锈钢组织与性能的影响。研究表明,430F不锈钢经锻造后进行850 ℃×4 h高温退火,随炉冷却到550 ℃出炉空冷,然后再进行350 ℃×10 h回火后炉冷,其组织由铁素体单相组成,基体内分布着大量细小且均匀的球状碳化物,沿晶界析出的σ相数量较少。试验钢的抗拉强度为516 MPa,硬度为181HV,伸长率达到29.9%,其断口表面存在数量较多、形态规整的韧窝,试验钢具有良好的塑性和韧性。
Forging and different post-forging heat treatment processes for 430F ferritic stainless steel in rolled condition. The effects of microstructure and properties of the forging 430F stainless steel at different heat treatment processes are studied by metallurgical structure, microhardness, tensile properties and fracture analysis of the test steel after heat treatment. The study shows that 430F stainless steel after forging, 850 ℃ × 4 h high temperature annealing, cooling with the furnace, 550 ℃ out of the air-cooled, and then 350 ℃ × 10 h tempering, cooling with the furnace, the microstructure of its composition by the ferrite single-phase ferrite matrix, the distribution of a large number of fine and uniformly distributed spherical carbides along the grain boundary precipitation σ-phase number is the least. The tensile strength of the test steel is 516 MPa, the hardness is 181 HV, and the elongation rate reaches 29.9%. There are a large number of regular toughness nests on the fracture surface, and the test steel has good plasticity and toughness.
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