Structure and properties of welded joints of 7CrMoVTiB10-10 (T24) steel

• Autorzy: Pańcikiewicz K.

Identyfikatory

DOI

10.1515/adms-2017-0026

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

7CrMoVTiB10-10; welded joint; root cracking

PL

7CrMoVTiB10-10; złącze spawane; pękanie

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2018
• Tom: Vol. 18, nr 1(55)
• Strony: 37--47
• Opis fizyczny: Bibliogr. 32 poz., rys., wykr., tab.

Twórcy

autor

Pańcikiewicz K.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Department of Physical and Powder Metallurgy, 30-059 Krakow, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).