Properties and Microstructure of Laser Welded VM12-SHC Steel Pipes Joints

Archives of Metallurgy and Materials

A. Skrzypczyk¹  H. Danielewski¹ 

[1] KIELCE UNIVERSITY OF TECHNOLOGY, 7th TYSI?CLECIA P.P. AV. 25-314 KIELCE, POLAND

关键词: Keywords: laser welding;    VM12-SHC martensitic steel;    bifocal welding head;    properties of pipe welds;   

DOI  :  10.1515/amm-2016-0191

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Paper presents results of microstructure and tests of welded joints of new generation VM12-SHC martensitic steel using high power CO2 laser (LBW method) with bifocal welding head. VM12-SHC is dedicated to energetic installation material, designed to replace currently used. High content of chromium and others alloying elements improve its resistance and strength characteristic. Use of VM12-SHC steel for production of the superheaters, heating chambers and walls in steam boilers resulted in various weldability researches. In article are presented results of destructive and non-destructive tests. For destructive: static bending and Vickers hardness tests, and for non-destructive: VT, RT, UT, micro and macroscopic tests were performed.

【 授权许可】

Unknown