Sc添加对Al-Cu-Mn重冷轧合金退火行为的影响

IF 4 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Xiaoyu Huang, Tianlin Huang, Yueyue Zhu, Guilin Wu, Yongzhong Zhang, Xiaoxu Huang, Oleg V. Mishin
{"title":"Sc添加对Al-Cu-Mn重冷轧合金退火行为的影响","authors":"Xiaoyu Huang,&nbsp;Tianlin Huang,&nbsp;Yueyue Zhu,&nbsp;Guilin Wu,&nbsp;Yongzhong Zhang,&nbsp;Xiaoxu Huang,&nbsp;Oleg V. Mishin","doi":"10.1007/s12540-025-01949-0","DOIUrl":null,"url":null,"abstract":"<div><p>Effects of minor additions of Sc on the microstructure evolution during long-term heat treatments at 200–300 °C have been studied for heavily rolled Al-Cu-Mn alloys, where Sc content varies in the range 0‒0.2 wt%. It is found that cold rolling to 90% thickness reduction results in deformation structures with boundary spacing of 58–68 nm measured along the normal direction. This cold-rolled sample is characterized by high hardness (145‒147 HV). Precipitation of θ′ particles along deformation-induced boundaries and coarsening of deformation structures via triple junction motion and boundary migration take place during annealing for 100 h at 200 °C or 250 °C. The extent of structural coarsening is greater in the Sc-free alloy than in the Sc-containing alloys, where the presence of Sc enhances precipitation and stability of θ′ particles. The coarsening of deformation structures leads to reduced hardness in each alloy, with greater reductions seen for the Sc-free alloy. Interestingly, an increase in Sc content from 0.1 wt% to 0.2 wt% does not lead to greater improvement in thermal stability of deformation structures. It is shown that the addition of 0.2 wt% Sc stimulates precipitation of Al<sub>3</sub>Sc particles during homogenization. As these particles consume Sc, the amount of Sc available for enhanced precipitation and stability of θ′ particles does not increase despite the higher concentration of this element in the chemical composition. Therefore, the number density of θ′ particles in samples heat treated at 200–250 °C also does not increase with increasing Sc content from 0.1 wt% to 0.2 wt%. Annealing at 300 °C for 100 h leads to fully recrystallized microstructures in each alloy. During recrystallization, finer grains develop in the Sc-containing alloys compared with those in the recrystallized Sc-free alloy. The recrystallized Sc-containing alloys are harder (51‒55 HV) than the Sc-free alloy (47 HV).</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 11","pages":"3158 - 3171"},"PeriodicalIF":4.0000,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12540-025-01949-0.pdf","citationCount":"0","resultStr":"{\"title\":\"Effects of Sc Additions on Annealing Behavior of Heavily Cold-Rolled Al-Cu-Mn Alloys\",\"authors\":\"Xiaoyu Huang,&nbsp;Tianlin Huang,&nbsp;Yueyue Zhu,&nbsp;Guilin Wu,&nbsp;Yongzhong Zhang,&nbsp;Xiaoxu Huang,&nbsp;Oleg V. Mishin\",\"doi\":\"10.1007/s12540-025-01949-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Effects of minor additions of Sc on the microstructure evolution during long-term heat treatments at 200–300 °C have been studied for heavily rolled Al-Cu-Mn alloys, where Sc content varies in the range 0‒0.2 wt%. It is found that cold rolling to 90% thickness reduction results in deformation structures with boundary spacing of 58–68 nm measured along the normal direction. This cold-rolled sample is characterized by high hardness (145‒147 HV). Precipitation of θ′ particles along deformation-induced boundaries and coarsening of deformation structures via triple junction motion and boundary migration take place during annealing for 100 h at 200 °C or 250 °C. The extent of structural coarsening is greater in the Sc-free alloy than in the Sc-containing alloys, where the presence of Sc enhances precipitation and stability of θ′ particles. The coarsening of deformation structures leads to reduced hardness in each alloy, with greater reductions seen for the Sc-free alloy. Interestingly, an increase in Sc content from 0.1 wt% to 0.2 wt% does not lead to greater improvement in thermal stability of deformation structures. It is shown that the addition of 0.2 wt% Sc stimulates precipitation of Al<sub>3</sub>Sc particles during homogenization. As these particles consume Sc, the amount of Sc available for enhanced precipitation and stability of θ′ particles does not increase despite the higher concentration of this element in the chemical composition. Therefore, the number density of θ′ particles in samples heat treated at 200–250 °C also does not increase with increasing Sc content from 0.1 wt% to 0.2 wt%. Annealing at 300 °C for 100 h leads to fully recrystallized microstructures in each alloy. During recrystallization, finer grains develop in the Sc-containing alloys compared with those in the recrystallized Sc-free alloy. The recrystallized Sc-containing alloys are harder (51‒55 HV) than the Sc-free alloy (47 HV).</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":703,\"journal\":{\"name\":\"Metals and Materials International\",\"volume\":\"31 11\",\"pages\":\"3158 - 3171\"},\"PeriodicalIF\":4.0000,\"publicationDate\":\"2025-05-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s12540-025-01949-0.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metals and Materials International\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12540-025-01949-0\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metals and Materials International","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12540-025-01949-0","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

摘要

在200-300°C长期热处理过程中,研究了少量添加Sc对Al-Cu-Mn合金组织演变的影响,其中Sc含量在0-0.2 wt%范围内变化。结果表明,当冷轧厚度减小到90%时,在法向方向产生了边界间距为58 ~ 68 nm的变形组织。这种冷轧样品的特点是硬度高(145-147 HV)。在200℃或250℃退火100 h时,θ′粒子沿变形边界析出,并通过三结运动和边界迁移使变形结构粗化。无Sc合金的组织粗化程度大于含Sc合金,其中Sc的存在增强了θ′颗粒的析出和稳定性。变形组织的粗化导致每种合金的硬度降低,无sc合金的硬度降低幅度更大。有趣的是,Sc含量从0.1 wt%增加到0.2 wt%并没有导致变形结构热稳定性的更大改善。结果表明,在均匀化过程中,添加0.2 wt%的Sc刺激了Al3Sc颗粒的析出。由于这些粒子消耗Sc,尽管化学成分中Sc的浓度较高,但用于增强沉淀和θ′粒子稳定性的Sc量并未增加。因此,在200-250℃热处理的样品中,θ′粒子的数量密度也不随Sc含量从0.1 wt%增加到0.2 wt%而增加。在300°C下退火100小时,导致每种合金的显微组织完全再结晶。在再结晶过程中,含sc合金的晶粒比无sc合金的晶粒细。含sc合金的再结晶硬度(51 ~ 55 HV)高于无sc合金(47 HV)。图形抽象
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of Sc Additions on Annealing Behavior of Heavily Cold-Rolled Al-Cu-Mn Alloys

Effects of minor additions of Sc on the microstructure evolution during long-term heat treatments at 200–300 °C have been studied for heavily rolled Al-Cu-Mn alloys, where Sc content varies in the range 0‒0.2 wt%. It is found that cold rolling to 90% thickness reduction results in deformation structures with boundary spacing of 58–68 nm measured along the normal direction. This cold-rolled sample is characterized by high hardness (145‒147 HV). Precipitation of θ′ particles along deformation-induced boundaries and coarsening of deformation structures via triple junction motion and boundary migration take place during annealing for 100 h at 200 °C or 250 °C. The extent of structural coarsening is greater in the Sc-free alloy than in the Sc-containing alloys, where the presence of Sc enhances precipitation and stability of θ′ particles. The coarsening of deformation structures leads to reduced hardness in each alloy, with greater reductions seen for the Sc-free alloy. Interestingly, an increase in Sc content from 0.1 wt% to 0.2 wt% does not lead to greater improvement in thermal stability of deformation structures. It is shown that the addition of 0.2 wt% Sc stimulates precipitation of Al3Sc particles during homogenization. As these particles consume Sc, the amount of Sc available for enhanced precipitation and stability of θ′ particles does not increase despite the higher concentration of this element in the chemical composition. Therefore, the number density of θ′ particles in samples heat treated at 200–250 °C also does not increase with increasing Sc content from 0.1 wt% to 0.2 wt%. Annealing at 300 °C for 100 h leads to fully recrystallized microstructures in each alloy. During recrystallization, finer grains develop in the Sc-containing alloys compared with those in the recrystallized Sc-free alloy. The recrystallized Sc-containing alloys are harder (51‒55 HV) than the Sc-free alloy (47 HV).

Graphical Abstract

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Metals and Materials International
Metals and Materials International 工程技术-材料科学:综合
CiteScore
7.10
自引率
8.60%
发文量
197
审稿时长
3.7 months
期刊介绍: Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.
×
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:604180095
Book学术官方微信