Physical simulation-based analysis of multipass welding in S500 shipbuilding steel

IF 2.4 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Welding in the World Pub Date : 2024-12-14 DOI:10.1007/s40194-024-01908-0

M. Gáspár, J. Kovács, J. Sainio, H. Tervo, V. Javaheri, A. Kaijalainen

{"title":"Physical simulation-based analysis of multipass welding in S500 shipbuilding steel","authors":"M. Gáspár, J. Kovács, J. Sainio, H. Tervo, V. Javaheri, A. Kaijalainen","doi":"10.1007/s40194-024-01908-0","DOIUrl":null,"url":null,"abstract":"<div><p>Novel generations of shipbuilding steels have outstanding toughness due to the improved steel producing processes. Their microstructure mainly consists of ferrite and bainite, while the presence of acicular ferrite has a role in high impact energy of the welded joint. This research aims to analyze the effect of multipass welding on weld characteristics of S500 shipbuilding steel. A Gleeble 3500 simulator machine is used to produce the welding thermal cycles by the Rykalin-3D model on 70 <span>\\(\\times\\)</span> 10 <span>\\(\\times\\)</span> 10 mm samples manufactured in transversal direction from a submerged arc welded joint of 16 mm plate. Temperatures for the simulations were set at 1350 °C for the coarse-grained zone forming in the weld metal (CGHAZ-W), 815 °C for the intercritical zone (ICHAZ-W), and a combination of these peak temperatures for the intercritically reheated coarse-grained zone (ICCGHAZ-W). The examined t<sub>8/5</sub> interval was 5–30 s. The weld properties were examined by microstructural examination, hardness test, and instrumented Charpy V-notch impact toughness test. The impact energy values of subzones were below the unaffected weld metal. Longer cooling time resulted in lower impact energy in ICHAZ-W. However, this tendency was not observed in CGHAZ-W. ICHAZ-W and ICCGHAZ-W resulted in the lowest impact toughness, which was indicated by the large unstable crack propagation. </p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 3","pages":"825 - 836"},"PeriodicalIF":2.4000,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-024-01908-0.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Welding in the World","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s40194-024-01908-0","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}

引用次数: 0

Abstract

Novel generations of shipbuilding steels have outstanding toughness due to the improved steel producing processes. Their microstructure mainly consists of ferrite and bainite, while the presence of acicular ferrite has a role in high impact energy of the welded joint. This research aims to analyze the effect of multipass welding on weld characteristics of S500 shipbuilding steel. A Gleeble 3500 simulator machine is used to produce the welding thermal cycles by the Rykalin-3D model on 70 \(\times\) 10 \(\times\) 10 mm samples manufactured in transversal direction from a submerged arc welded joint of 16 mm plate. Temperatures for the simulations were set at 1350 °C for the coarse-grained zone forming in the weld metal (CGHAZ-W), 815 °C for the intercritical zone (ICHAZ-W), and a combination of these peak temperatures for the intercritically reheated coarse-grained zone (ICCGHAZ-W). The examined t_8/5 interval was 5–30 s. The weld properties were examined by microstructural examination, hardness test, and instrumented Charpy V-notch impact toughness test. The impact energy values of subzones were below the unaffected weld metal. Longer cooling time resulted in lower impact energy in ICHAZ-W. However, this tendency was not observed in CGHAZ-W. ICHAZ-W and ICCGHAZ-W resulted in the lowest impact toughness, which was indicated by the large unstable crack propagation.

查看原文本刊更多论文

基于物理仿真的S500船用钢多道次焊接分析

由于制钢工艺的改进，新一代的造船用钢具有优异的韧性。它们的组织主要由铁素体和贝氏体组成，而针状铁素体的存在对焊接接头的高冲击能起作用。本研究旨在分析多道次焊接对S500船舶用钢焊缝特性的影响。利用Gleeble 3500模拟机对70个\(\times\) 10 \(\times\)埋弧焊接头横方向制作的10mm试样进行了Rykalin-3D模型的焊接热循环模拟。模拟温度为1350℃，焊缝金属粗晶区形成（chaz - w），临界间区形成（ICHAZ-W）为815℃，临界间再加热粗晶区形成（icchaz - w）的峰值温度为这些峰值温度的组合。检测时间间隔为5 ～ 30 s。采用显微组织检查、硬度测试和仪器夏比v形缺口冲击韧性测试对焊缝性能进行了检测。子区域的冲击能值低于未受影响的焊缝金属。冷却时间越长，ICHAZ-W的冲击能越低。然而，在cgaz - w中没有观察到这种趋势。ICHAZ-W和icchaz - w的冲击韧性最低，表现为较大的不稳定裂纹扩展。

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分钟内获得全文求助全文

来源期刊

Welding in the World METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

4.20

自引率

14.30%

发文量

181

审稿时长

6-12 weeks

期刊介绍： The journal Welding in the World publishes authoritative papers on every aspect of materials joining, including welding, brazing, soldering, cutting, thermal spraying and allied joining and fabrication techniques.