{"title":"Application of flux-cored wire with aluminothermic filler for arc welding of E40 steel at low temperatures","authors":"Anastasia V. Tkacheva, Evgeniy E. Abashkin","doi":"10.1007/s11015-024-01827-x","DOIUrl":null,"url":null,"abstract":"<div><p>The problem of thermal stresses is considered. The process of electric arc welding of E40 steel at low temperatures is simulated. It is demonstrated that it is possible to use a flux-cored wire with an aluminothermic filler to reduce the residual stresses. The heat source is modeled by a double ellipsoid proposed by John A. Goldack. It is assumed that the plate material is elastoplastic and that strains are small and have elastic and plastic components. Reversible (elastic) strains are related to stresses by the Duhamel–Neumann law, while irreversible (plastic) strains arise and develop due to plastic flow according to the associated plastic flow law. It is established that the combined thermal effect increases the temperature range in which welding of E40 steel is possible, which is confirmed by the intensity of residual stresses.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"68 8","pages":"1175 - 1183"},"PeriodicalIF":0.8000,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metallurgist","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11015-024-01827-x","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
Abstract
The problem of thermal stresses is considered. The process of electric arc welding of E40 steel at low temperatures is simulated. It is demonstrated that it is possible to use a flux-cored wire with an aluminothermic filler to reduce the residual stresses. The heat source is modeled by a double ellipsoid proposed by John A. Goldack. It is assumed that the plate material is elastoplastic and that strains are small and have elastic and plastic components. Reversible (elastic) strains are related to stresses by the Duhamel–Neumann law, while irreversible (plastic) strains arise and develop due to plastic flow according to the associated plastic flow law. It is established that the combined thermal effect increases the temperature range in which welding of E40 steel is possible, which is confirmed by the intensity of residual stresses.
考虑了热应力问题。对E40钢的低温电弧焊过程进行了模拟。结果表明，在焊丝中加入热铝填料可以减小残余应力。热源是由John a . Goldack提出的双椭球模型。假定板材为弹塑性材料，且应变较小，具有弹塑性分量。可逆性（弹性）应变与应力的关系为Duhamel-Neumann定律，可逆性（塑性）应变与塑性流动的关系为塑性流动定律。结果表明，复合热效应增大了E40钢的焊接温度范围，残余应力强度也证实了这一点。
期刊介绍：
Metallurgist is the leading Russian journal in metallurgy. Publication started in 1956.
Basic topics covered include:
State of the art and development of enterprises in ferrous and nonferrous metallurgy and mining;
Metallurgy of ferrous, nonferrous, rare, and precious metals; Metallurgical equipment;
Automation and control;
Protection of labor;
Protection of the environment;
Resources and energy saving;
Quality and certification;
History of metallurgy;
Inventions (patents).
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