On the applicability of hardening mechanisms to low-carbon and low-alloy steels

IF 0.8 Q4 METALLURGY & METALLURGICAL ENGINEERING
M. Jaxymbetova, A. Kanayev, A. Akhmedyanov, K. Kirgizbayeva
{"title":"On the applicability of hardening mechanisms to low-carbon and low-alloy steels","authors":"M. Jaxymbetova, A. Kanayev, A. Akhmedyanov, K. Kirgizbayeva","doi":"10.31643/2022/6445.17","DOIUrl":null,"url":null,"abstract":"On the basis of experimental studies, the approximate contribution of various hardening mechanisms to the yield point of low-carbon and low-alloy steels is estimated. It has been established that for hot-rolled steels (St.3sp and St5ps), solid-solution and grain-boundary hardening (54.0% and 29.0, %) make the greatest contribution to the yield point. The predominant strengthening mechanism of low-alloy steel 10HNDP is solid solution, a high proportion of which in this steel is explained by the resistance to moving dislocations from the side of dissolved atoms of Ni, Cu, P, and Cr in α-Fe. In low-alloy steel 16G2AF, along with these hardening components, the role of precipitation hardening is noticeable (20.0%). It is shown that thermomechanical treatment of steel grade St.5ps leads to an increase in the value of dislocation hardening up to 27.0% due to an increase in the density of dislocations and the retention of most of the dislocations in the rolled stock during accelerated cooling of hot-deformed austenite. It is noted that solid solution hardening with alloying with cheap alloying elements (Mn, Si), as well as dislocation and dispersion hardening through the use of thermomechanical treatment in combination with the addition of carbide and nitride-forming elements V (C, N).","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2022-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Kompleksnoe Ispolzovanie Mineralnogo Syra","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.31643/2022/6445.17","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0

Abstract

On the basis of experimental studies, the approximate contribution of various hardening mechanisms to the yield point of low-carbon and low-alloy steels is estimated. It has been established that for hot-rolled steels (St.3sp and St5ps), solid-solution and grain-boundary hardening (54.0% and 29.0, %) make the greatest contribution to the yield point. The predominant strengthening mechanism of low-alloy steel 10HNDP is solid solution, a high proportion of which in this steel is explained by the resistance to moving dislocations from the side of dissolved atoms of Ni, Cu, P, and Cr in α-Fe. In low-alloy steel 16G2AF, along with these hardening components, the role of precipitation hardening is noticeable (20.0%). It is shown that thermomechanical treatment of steel grade St.5ps leads to an increase in the value of dislocation hardening up to 27.0% due to an increase in the density of dislocations and the retention of most of the dislocations in the rolled stock during accelerated cooling of hot-deformed austenite. It is noted that solid solution hardening with alloying with cheap alloying elements (Mn, Si), as well as dislocation and dispersion hardening through the use of thermomechanical treatment in combination with the addition of carbide and nitride-forming elements V (C, N).
关于低碳和低合金钢硬化机制的适用性
在实验研究的基础上,估计了各种硬化机制对低碳钢和低合金钢屈服点的近似贡献。已经确定,对于热轧钢(St.3sp和St5ps),固溶和晶界硬化(54.0%和29.0%)对屈服点的贡献最大。低合金钢10HNDP的主要强化机制是固溶体,在该钢中,固溶体的很大一部分是由α-Fe中溶解的Ni、Cu、P和Cr原子侧的位错移动阻力来解释的。在低合金钢16G2AF中,沉淀硬化的作用是显著的(20.0%)。研究表明,St.5ps钢的热机械处理导致位错硬化值增加至27.0%,这是由于在热变形奥氏体的加速冷却过程中,位错密度的增加和大部分位错在轧制材料中的保留。值得注意的是,通过使用廉价合金元素(Mn,Si)进行合金化的固溶硬化,以及通过使用与添加碳化物和氮化物形成元素V(C,N)相结合的热机械处理的位错和分散硬化。
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
自引率
42.90%
发文量
55
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信