热压烧结 Nb5Cr 超级合金的力学性能和氧化行为

IF 0.6 4区 材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING
Zhenjie Sun
{"title":"热压烧结 Nb5Cr 超级合金的力学性能和氧化行为","authors":"Zhenjie Sun","doi":"10.1134/S1067821224600042","DOIUrl":null,"url":null,"abstract":"<p>In this paper, an alloy with a group of Nb5Cr was prepared by hot pressing sintering and its phase composition was characterized. After hot pressing sintering, Cr element exists in the form of solid solution outside the Nb matrix, and a certain amount of NbCr<sub>2</sub> phase is formed. The bending strength of the obtained alloys is not less than 250 MPa, and the fracture toughness is close to that of H11 casting die steel. In addition to the mechanical properties of the alloy, the oxidation behavior of the alloy at different temperatures was also studied. The experimental results show that the change of the alloy is not obvious at 1000°C except for the dissolution of Cr element, and at 1000–1200°C, the alloy can spontaneously form a CrNbO<sub>4</sub> oxide film which is weakly bound to the alloy matrix. This is very conducive to the application of separation between the mold and the casting mold during casting. This product provides the casting industry with a material that can spontaneously form a Self-oxidizing film under high temperature oxidation environment and provides a usable choice for materials used in high temperature casting environment.</p>","PeriodicalId":765,"journal":{"name":"Russian Journal of Non-Ferrous Metals","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Mechanical Properties and Oxidation Behavior of Hot Pressing Sintered Nb5Cr Superalloy\",\"authors\":\"Zhenjie Sun\",\"doi\":\"10.1134/S1067821224600042\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In this paper, an alloy with a group of Nb5Cr was prepared by hot pressing sintering and its phase composition was characterized. After hot pressing sintering, Cr element exists in the form of solid solution outside the Nb matrix, and a certain amount of NbCr<sub>2</sub> phase is formed. The bending strength of the obtained alloys is not less than 250 MPa, and the fracture toughness is close to that of H11 casting die steel. In addition to the mechanical properties of the alloy, the oxidation behavior of the alloy at different temperatures was also studied. The experimental results show that the change of the alloy is not obvious at 1000°C except for the dissolution of Cr element, and at 1000–1200°C, the alloy can spontaneously form a CrNbO<sub>4</sub> oxide film which is weakly bound to the alloy matrix. This is very conducive to the application of separation between the mold and the casting mold during casting. This product provides the casting industry with a material that can spontaneously form a Self-oxidizing film under high temperature oxidation environment and provides a usable choice for materials used in high temperature casting environment.</p>\",\"PeriodicalId\":765,\"journal\":{\"name\":\"Russian Journal of Non-Ferrous Metals\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2024-06-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Russian Journal of Non-Ferrous Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1067821224600042\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Non-Ferrous Metals","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S1067821224600042","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0

摘要

摘要 本文采用热压烧结法制备了一种 Nb5Cr 组合金,并对其相组成进行了表征。热压烧结后,铬元素以固溶体形式存在于铌基体之外,并形成一定量的 NbCr2 相。所得合金的抗弯强度不低于 250 兆帕,断裂韧性接近 H11 铸造模具钢。除了合金的机械性能,还研究了合金在不同温度下的氧化行为。实验结果表明,在 1000°C 时,除了铬元素的溶解外,合金的变化并不明显,而在 1000-1200°C 时,合金可自发形成与合金基体结合力较弱的 CrNbO4 氧化膜。这非常有利于在铸造过程中实现铸型与铸模之间的分离。该产品为铸造行业提供了一种在高温氧化环境下可自发形成自氧化膜的材料,为高温铸造环境下使用的材料提供了一种可用的选择。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Mechanical Properties and Oxidation Behavior of Hot Pressing Sintered Nb5Cr Superalloy

Mechanical Properties and Oxidation Behavior of Hot Pressing Sintered Nb5Cr Superalloy

Mechanical Properties and Oxidation Behavior of Hot Pressing Sintered Nb5Cr Superalloy

In this paper, an alloy with a group of Nb5Cr was prepared by hot pressing sintering and its phase composition was characterized. After hot pressing sintering, Cr element exists in the form of solid solution outside the Nb matrix, and a certain amount of NbCr2 phase is formed. The bending strength of the obtained alloys is not less than 250 MPa, and the fracture toughness is close to that of H11 casting die steel. In addition to the mechanical properties of the alloy, the oxidation behavior of the alloy at different temperatures was also studied. The experimental results show that the change of the alloy is not obvious at 1000°C except for the dissolution of Cr element, and at 1000–1200°C, the alloy can spontaneously form a CrNbO4 oxide film which is weakly bound to the alloy matrix. This is very conducive to the application of separation between the mold and the casting mold during casting. This product provides the casting industry with a material that can spontaneously form a Self-oxidizing film under high temperature oxidation environment and provides a usable choice for materials used in high temperature casting environment.

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
Russian Journal of Non-Ferrous Metals
Russian Journal of Non-Ferrous Metals METALLURGY & METALLURGICAL ENGINEERING-
CiteScore
1.90
自引率
12.50%
发文量
59
审稿时长
3 months
期刊介绍: Russian Journal of Non-Ferrous Metals is a journal the main goal of which is to achieve new knowledge in the following topics: extraction metallurgy, hydro- and pirometallurgy, casting, plastic deformation, metallography and heat treatment, powder metallurgy and composites, self-propagating high-temperature synthesis, surface engineering and advanced protected coatings, environments, and energy capacity in non-ferrous metallurgy.
×
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