<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Gas Tungsten Arc butt welded joints of tubes of 7CrMoVTiB10-10 made using bainitic-martensitic P 24-IG filler metal were found to be susceptible to root cracking. This was avoided by using the CMS-IG filler metal and austenitic EPRI P87 filler metal. Detailed coefficient of thermal expansion analysis for both filler metals was performed. Unfortunately, CMS-IG filler metal is characterized by a lower creep rupture strength than P 24-IG. For this reason, the joints were produced by the 141 method with using two filler metals: P 24- IG and EPRI P87. All the welded joints was characterized by the B quality level. Macrostructural, microstructural and hardness data for both welded joints are presented. The standard requirement, &lt; 350 HV10, was marginally not met and was achieved through post weld heat treatment.</p></abstract>

Gas Tungsten Arc butt welded joints of tubes of 7CrMoVTiB10-10 made using bainitic-martensitic P 24-IG filler metal were found to be susceptible to root cracking. This was avoided by using the CMS-IG filler metal and austenitic EPRI P87 filler metal. Detailed coefficient of thermal expansion analysis for both filler metals was performed. Unfortunately, CMS-IG filler metal is characterized by a lower creep rupture strength than P 24-IG. For this reason, the joints were produced by the 141 method with using two filler metals: P 24- IG and EPRI P87. All the welded joints was characterized by the B quality level. Macrostructural, microstructural and hardness data for both welded joints are presented. The standard requirement, < 350 HV10, was marginally not met and was achieved through post weld heat treatment.

Structure and Properties of Welded Joints of 7CrMoVTiB10-10 (T24) Steel

Faculty of Metals Engineering and Industrial Computer Science, Department of Physical and Powder Metallurgy

Advances in Materials Science

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Structure and Properties of Welded Joints of 7CrMoVTiB10-10 (T24) Steel"}

Gas Tungsten Arc butt welded joints of tubes of 7CrMoVTiB10-10 made using bainitic-martensitic P 24-IG filler metal were found to be susceptible to root...

Structure and Properties of Welded Joints of 7CrMoVTiB10-10 (T24) Steel

Publié en ligne: 24 avr. 2018

Pages: 37 - 47

DOI: https://doi.org/10.1515/adms-2017-0026

Mots clés
7CrMoVTiB10-10 steel, welded joint, root cracking

© 2018 K. Pańcikiewicz, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Structure and Properties of Welded Joints of 7CrMoVTiB10-10 (T24) Steel

Publié en ligne: 24 avr. 2018

Pages: 37 - 47

DOI: https://doi.org/10.1515/adms-2017-0026

Mots clés7CrMoVTiB10-10 steel, welded joint, root cracking

© 2018 K. Pańcikiewicz, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
7CrMoVTiB10-10 steel, welded joint, root cracking