Xiqing Li, Wei Liu, Yutong Chen, Zhiguo Zhang, Peiwei Bao
{"title":"奥氏体不锈钢和耐候钢异种双脉冲电阻点焊实验研究","authors":"Xiqing Li, Wei Liu, Yutong Chen, Zhiguo Zhang, Peiwei Bao","doi":"10.1007/s12540-024-01667-z","DOIUrl":null,"url":null,"abstract":"<div><p>The aim of this study is to prevent thermal cracking in the fusion zone of dissimilar resistance spot weld, which arises due to the electrical and thermal conductivity differences of austenitic steel and weathering steel. Therefore, dissimilar double pulse resistance spot welding experiments were carried out on 4-mm-thick 301LN austenitic stainless steel and 09CuPCrNi weathering steel sheets. The first low-current pulse was used for prewelding, and the second high-current pulse was used for weld generation under a high electrode force. Under these conditions, satisfactory welds that met the welding criterion without thermal cracks or central shrinkage cavities were obtained. In the fusion zone of the double pulse weld, the phases present were lath martensite, δ-ferrite, austenite and phosphorus-rich eutectic. There was a small amount of austenite in this zone, and the eutectic appeared at the grain boundaries. The failure mode of the double pulse weld was pull-out fracture. Finally, the load-bearing capacity of the double pulse weld was 35% greater than that of the single pulse weld.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"30 9","pages":"2571 - 2580"},"PeriodicalIF":3.3000,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental Study of Dissimilar Double Pulse Resistance Spot Welded Austenitic Stainless Steel and Weathering Steel\",\"authors\":\"Xiqing Li, Wei Liu, Yutong Chen, Zhiguo Zhang, Peiwei Bao\",\"doi\":\"10.1007/s12540-024-01667-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The aim of this study is to prevent thermal cracking in the fusion zone of dissimilar resistance spot weld, which arises due to the electrical and thermal conductivity differences of austenitic steel and weathering steel. Therefore, dissimilar double pulse resistance spot welding experiments were carried out on 4-mm-thick 301LN austenitic stainless steel and 09CuPCrNi weathering steel sheets. The first low-current pulse was used for prewelding, and the second high-current pulse was used for weld generation under a high electrode force. Under these conditions, satisfactory welds that met the welding criterion without thermal cracks or central shrinkage cavities were obtained. In the fusion zone of the double pulse weld, the phases present were lath martensite, δ-ferrite, austenite and phosphorus-rich eutectic. There was a small amount of austenite in this zone, and the eutectic appeared at the grain boundaries. The failure mode of the double pulse weld was pull-out fracture. Finally, the load-bearing capacity of the double pulse weld was 35% greater than that of the single pulse weld.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":703,\"journal\":{\"name\":\"Metals and Materials International\",\"volume\":\"30 9\",\"pages\":\"2571 - 2580\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2024-04-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metals and Materials International\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12540-024-01667-z\",\"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/s12540-024-01667-z","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}
Experimental Study of Dissimilar Double Pulse Resistance Spot Welded Austenitic Stainless Steel and Weathering Steel
The aim of this study is to prevent thermal cracking in the fusion zone of dissimilar resistance spot weld, which arises due to the electrical and thermal conductivity differences of austenitic steel and weathering steel. Therefore, dissimilar double pulse resistance spot welding experiments were carried out on 4-mm-thick 301LN austenitic stainless steel and 09CuPCrNi weathering steel sheets. The first low-current pulse was used for prewelding, and the second high-current pulse was used for weld generation under a high electrode force. Under these conditions, satisfactory welds that met the welding criterion without thermal cracks or central shrinkage cavities were obtained. In the fusion zone of the double pulse weld, the phases present were lath martensite, δ-ferrite, austenite and phosphorus-rich eutectic. There was a small amount of austenite in this zone, and the eutectic appeared at the grain boundaries. The failure mode of the double pulse weld was pull-out fracture. Finally, the load-bearing capacity of the double pulse weld was 35% greater than that of the single pulse weld.
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.
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