Significant impact of intercritical annealing temperature on microstructure and mechanical properties of Al substituted Si dual phase steel under ultra-rapid heating

IF 0.9 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Metallurgical Research & Technology Pub Date : 2021-07-01 DOI:10.1051/metal/2021051

Y. Deng, R. Misra

{"title":"Significant impact of intercritical annealing temperature on microstructure and mechanical properties of Al substituted Si dual phase steel under ultra-rapid heating","authors":"Y. Deng, R. Misra","doi":"10.1051/metal/2021051","DOIUrl":null,"url":null,"abstract":"The significant impact of ultra-rapid heating continuous annealing on microstructure and mechanical properties of Al substituted Si dual phase steel under hot-dip galvanized process was studied. The heating rate of 300 °C/s, and different annealing temperatures in the range of 750 °C to 810 °C were explored. The study indicated that the yield and tensile strengths are increased with the increase of intercritical annealing temperature during rapid heating continuous annealing. When the annealing temperature was 780 °C, the steel exhibited good comprehensive properties with yield strength of 574.9 MPa, tensile strength up to 1009 MPa, total elongation of 18.5%. This is attributed to refined microstructure, appropriate proportion of phases, high density of dislocations and finely distributed NbC precipitates. Furthermore, the variations in strength, elongation and strain-hardening behavior of the steel with thermomechanical parameters and the inherent mechanism for strengthening were further discussed in relation to the microstructural features.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"4 1","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metallurgical Research & Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1051/metal/2021051","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}

引用次数: 1

Abstract

The significant impact of ultra-rapid heating continuous annealing on microstructure and mechanical properties of Al substituted Si dual phase steel under hot-dip galvanized process was studied. The heating rate of 300 °C/s, and different annealing temperatures in the range of 750 °C to 810 °C were explored. The study indicated that the yield and tensile strengths are increased with the increase of intercritical annealing temperature during rapid heating continuous annealing. When the annealing temperature was 780 °C, the steel exhibited good comprehensive properties with yield strength of 574.9 MPa, tensile strength up to 1009 MPa, total elongation of 18.5%. This is attributed to refined microstructure, appropriate proportion of phases, high density of dislocations and finely distributed NbC precipitates. Furthermore, the variations in strength, elongation and strain-hardening behavior of the steel with thermomechanical parameters and the inherent mechanism for strengthening were further discussed in relation to the microstructural features.

查看原文本刊更多论文

临界间退火温度对Al取代Si双相钢超快速加热组织和力学性能的影响

研究了超快加热连续退火对热浸镀锌Al取代Si双相钢组织和力学性能的显著影响。研究了300℃/s的升温速率和750 ~ 810℃的不同退火温度。研究表明，在快速加热连续退火过程中，屈服强度和抗拉强度随着临界间退火温度的升高而提高。当退火温度为780℃时，钢的屈服强度为574.9 MPa，抗拉强度为1009 MPa，总伸长率为18.5%，综合性能良好。这主要是由于合金组织精细、相比例适宜、位错密度高、碳化硅析出物分布精细所致。进一步讨论了钢的强度、伸长率和应变硬化性能随热力学参数的变化规律以及强化的内在机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Metallurgical Research & Technology METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

1.70

自引率

9.10%

发文量

审稿时长

4.4 months

期刊介绍： Metallurgical Research and Technology (MRT) is a peer-reviewed bi-monthly journal publishing original high-quality research papers in areas ranging from process metallurgy to metal product properties and applications of ferrous and non-ferrous metals and alloys, including light-metals. It covers also the materials involved in the metal processing as ores, refractories and slags. The journal is listed in the citation index Web of Science and has an Impact Factor. It is highly concerned by the technological innovation as a support of the metallurgical industry at a time when it has to tackle severe challenges like energy, raw materials, sustainability, environment... Strengthening and enhancing the dialogue between science and industry is at the heart of the scope of MRT. This is why it welcomes manuscripts focusing on industrial practice, as well as basic metallurgical knowledge or review articles.