Dilatometry of Steel for the Production of 5.56 mm Calibre Rifle Barrels

A. Debski, T. Majewski, R. Paszkowski
{"title":"Dilatometry of Steel for the Production of 5.56 mm Calibre Rifle Barrels","authors":"A. Debski, T. Majewski, R. Paszkowski","doi":"10.5604/01.3001.0015.5989","DOIUrl":null,"url":null,"abstract":"During high rates of fire, the bore of the firearm barrel is exposed to high temperatures. This exposure induces structural changes in the barrel material, which is especially significant for the substrate of the galvanic chrome plating. The alloy steel grades used currently for firearm barrels, when exposed to heating above the ferrite stability limits, develop a phase transition with a discrete negative change in the material volume, which results in typical crazing in the bore. This effect is destructive to the galvanic chrome plating, leading to a loss of adhesion, which reduces the ballistic performance of the firearm, especially its muzzle velocity. This can be prevented by manufacturing barrels from steels having a limited range of phase transitions. The primary method for determining the presence of distinct volume changes in steel due to phase transition is dilatometry over a wide temperature range, which includes the interval within which the barrel bore is heated. This paper presents the dilatometry results for four steel grades, which included \na steel grade currently used for firearm barrels, and an analysis of the effects of phase transition on the degradation of the barrel bore.\n\n","PeriodicalId":52820,"journal":{"name":"Problemy Mechatroniki","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Problemy Mechatroniki","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5604/01.3001.0015.5989","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

During high rates of fire, the bore of the firearm barrel is exposed to high temperatures. This exposure induces structural changes in the barrel material, which is especially significant for the substrate of the galvanic chrome plating. The alloy steel grades used currently for firearm barrels, when exposed to heating above the ferrite stability limits, develop a phase transition with a discrete negative change in the material volume, which results in typical crazing in the bore. This effect is destructive to the galvanic chrome plating, leading to a loss of adhesion, which reduces the ballistic performance of the firearm, especially its muzzle velocity. This can be prevented by manufacturing barrels from steels having a limited range of phase transitions. The primary method for determining the presence of distinct volume changes in steel due to phase transition is dilatometry over a wide temperature range, which includes the interval within which the barrel bore is heated. This paper presents the dilatometry results for four steel grades, which included a steel grade currently used for firearm barrels, and an analysis of the effects of phase transition on the degradation of the barrel bore.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
5.56mm口径步枪枪管生产用钢的膨胀率测定
在高射速期间,枪管的膛孔暴露在高温下。这种暴露导致筒体材料的结构变化,这对于电镀铬的基底来说尤其重要。目前用于枪管的合金钢等级,当暴露在高于铁氧体稳定性极限的加热下时,会产生材料体积离散负变化的相变,这会导致膛内出现典型的裂纹。这种影响会破坏电镀铬,导致附着力损失,从而降低枪支的弹道性能,尤其是初速。这可以通过用具有有限相变范围的钢制造桶来防止。确定钢中由于相变而出现明显体积变化的主要方法是在宽温度范围内进行膨胀测量,包括加热枪管膛的间隔。本文介绍了四种钢号的膨胀测量结果,其中包括目前用于枪管的一种钢号,并分析了相变对枪管膛退化的影响。
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 去求助
来源期刊
自引率
0.00%
发文量
23
审稿时长
53 weeks
期刊最新文献
Testing the Mechanical Response of Additively Manufactured Composite Joints Development of a Method of Analysing TNT and its Derivatives in the Trichoptera Larvae of the Genus Hydropsyche Angustipennis, Curtis 1834, Selected as a Bioaccumulation Indicator for the Detection of Aquatic Environment Pollution with Explosive Residues The Complete Set of Distinguishable Diagnostic States for a Centrifugal Pump System Development of a Solid, Low-Smoke Rocket Propellant – Smoke Generation Intensity Tests Using a Laser and Photodiode Setup Badania lotu przeciwpancernego pocisku kierowanego Pirat z funkcją „top attack”
×
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
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1