Comparative Characterization of P91 and 10CrMo9-10 Creep Resistant Steel Welds

D. M. Madyira; J. A. Liebenberg; A. Kaymacki

doi:10.1016/j.promfg.2017.02.044

Comparative Characterization of P91 and 10CrMo9-10 Creep Resistant Steel Welds

D. M. Madyira, J. A. Liebenberg, A. Kaymacki

Mechanical Engineering Science

University of Johannesburg

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

P91 and 10CrMo9-10 creep resistant steels are critical to the performance of boiler tubes and power generating plants in general. Components made from these materials are mainly joined by welding. This paper reports on the comparative study of the effect of TIG and SMAW welding on the mechanical performance of P91 and 10CrMo9-10. TIG was used for root welding while SMAW was used for weld filling of V-butt joints. Specimens of the two alloys prepared using recommended welding procedures are evaluated using optical microscopy and Vickers micro hardness assessment. Some specimens were post weld heat treated while others were not. Post weld heat treated (PWHT) specimens exhibited similar properties as the corresponding base materials for both steels. TIG welding resulted in significant grain size reduction in both steels. PWHT produced more consistent grain structure, which is favorable.

Original language	English
Pages (from-to)	345-352
Number of pages	8
Journal	Procedia Manufacturing
Volume	8
DOIs	https://doi.org/10.1016/j.promfg.2017.02.044
Publication status	Published - 2017

Keywords

10CrMo9-10
Microhardness
P91
Shieled Metal Arc Welding
Tungsten Inert Gas Welding

ASJC Scopus subject areas

Artificial Intelligence
Industrial and Manufacturing Engineering

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10.1016/j.promfg.2017.02.044

Cite this

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title = "Comparative Characterization of P91 and 10CrMo9-10 Creep Resistant Steel Welds",

abstract = "P91 and 10CrMo9-10 creep resistant steels are critical to the performance of boiler tubes and power generating plants in general. Components made from these materials are mainly joined by welding. This paper reports on the comparative study of the effect of TIG and SMAW welding on the mechanical performance of P91 and 10CrMo9-10. TIG was used for root welding while SMAW was used for weld filling of V-butt joints. Specimens of the two alloys prepared using recommended welding procedures are evaluated using optical microscopy and Vickers micro hardness assessment. Some specimens were post weld heat treated while others were not. Post weld heat treated (PWHT) specimens exhibited similar properties as the corresponding base materials for both steels. TIG welding resulted in significant grain size reduction in both steels. PWHT produced more consistent grain structure, which is favorable.",

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AU - Liebenberg, J. A.

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AB - P91 and 10CrMo9-10 creep resistant steels are critical to the performance of boiler tubes and power generating plants in general. Components made from these materials are mainly joined by welding. This paper reports on the comparative study of the effect of TIG and SMAW welding on the mechanical performance of P91 and 10CrMo9-10. TIG was used for root welding while SMAW was used for weld filling of V-butt joints. Specimens of the two alloys prepared using recommended welding procedures are evaluated using optical microscopy and Vickers micro hardness assessment. Some specimens were post weld heat treated while others were not. Post weld heat treated (PWHT) specimens exhibited similar properties as the corresponding base materials for both steels. TIG welding resulted in significant grain size reduction in both steels. PWHT produced more consistent grain structure, which is favorable.

KW - 10CrMo9-10

KW - Microhardness

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KW - Shieled Metal Arc Welding

KW - Tungsten Inert Gas Welding

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Comparative Characterization of P91 and 10CrMo9-10 Creep Resistant Steel Welds

Abstract

Keywords

ASJC Scopus subject areas

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