{"title":"低碳Mn-Ni-Nb钢:第2部分可焊性","authors":"F. Heisterkamp, K. Hulka","doi":"10.1179/030716984803274558","DOIUrl":null,"url":null,"abstract":"AbstractThe weldability of a 0·5Ni-0·15Nb steel has been investigated using welding-simulation procedures, laboratory testing, pipe production welding of spiral and V-O pipes, and manual and automatic field welding. It has been shown that the weld heat-affected zones exhibit a tough bainitic microstructure over a wide range of cooling rates encountered in pipe welding. The optimum weld-metal microstructure and properties are obtained with a Mo-B-Ti wire are enhanced by the diffusion of Nb from the baseplate. The excellent strength and toughness of the weldments can therefore be matched with the baseplate properties of X65 to X75 pipe obtained with this Ni-Nb steel. Freedom from cold cracking and relatively low maximum hardness values are additional features of the weldments.","PeriodicalId":18409,"journal":{"name":"Metals technology","volume":"200 1","pages":"545-549"},"PeriodicalIF":0.0000,"publicationDate":"1984-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Low-carbon Mn-Ni-Nb steel: Part 2 Weldability\",\"authors\":\"F. Heisterkamp, K. Hulka\",\"doi\":\"10.1179/030716984803274558\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"AbstractThe weldability of a 0·5Ni-0·15Nb steel has been investigated using welding-simulation procedures, laboratory testing, pipe production welding of spiral and V-O pipes, and manual and automatic field welding. It has been shown that the weld heat-affected zones exhibit a tough bainitic microstructure over a wide range of cooling rates encountered in pipe welding. The optimum weld-metal microstructure and properties are obtained with a Mo-B-Ti wire are enhanced by the diffusion of Nb from the baseplate. The excellent strength and toughness of the weldments can therefore be matched with the baseplate properties of X65 to X75 pipe obtained with this Ni-Nb steel. Freedom from cold cracking and relatively low maximum hardness values are additional features of the weldments.\",\"PeriodicalId\":18409,\"journal\":{\"name\":\"Metals technology\",\"volume\":\"200 1\",\"pages\":\"545-549\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1984-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metals technology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1179/030716984803274558\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metals technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1179/030716984803274558","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
摘要
摘要采用焊接模拟、室内试验、螺旋管和v型管的管道生产焊接以及现场手工和自动焊接等方法，研究了0.5 ni -0 15Nb钢的可焊性。结果表明，在较大的冷却速率范围内，焊接热影响区呈现出坚韧的贝氏体组织。钼-硼-钛焊丝的最佳焊缝组织和性能是通过从基板中扩散铌而得到的。因此，焊接件的优异强度和韧性可以与用这种Ni-Nb钢获得的X65至X75管的底板性能相匹配。免于冷裂和相对较低的最大硬度值是焊件的附加特性。
AbstractThe weldability of a 0·5Ni-0·15Nb steel has been investigated using welding-simulation procedures, laboratory testing, pipe production welding of spiral and V-O pipes, and manual and automatic field welding. It has been shown that the weld heat-affected zones exhibit a tough bainitic microstructure over a wide range of cooling rates encountered in pipe welding. The optimum weld-metal microstructure and properties are obtained with a Mo-B-Ti wire are enhanced by the diffusion of Nb from the baseplate. The excellent strength and toughness of the weldments can therefore be matched with the baseplate properties of X65 to X75 pipe obtained with this Ni-Nb steel. Freedom from cold cracking and relatively low maximum hardness values are additional features of the weldments.
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