Heat affected zone creep characterization of INCOLOY 800H by means of small punch test. (December 2018)

• Record Type: Journal Article
• Authors: Nafari, M.; Salemi Golezani, A.
• Is Part Of: Engineering failure analysis. Volume 94(2018)
• Page Start: 407
• Page End: 411
• Publication Date: 2018-12
• Subjects: Small punch creep -- Weldment -- Microstructure -- Heat affected zone -- Direct current electrode negative; System failures (Engineering) -- Periodicals; Fracture mechanics -- Periodicals; Reliability (Engineering) -- Periodicals; Pannes -- Périodiques; Rupture, Mécanique de la -- Périodiques; Fiabilité -- Périodiques; Fracture mechanics; Reliability (Engineering); System failures (Engineering); Periodicals; Electronic journals; 620.112
• DOI: 10.1016/j.engfailanal.2018.08.020
• Languages: English
• ISSNs: 1350-6307

Abstract

Abstract: This work is about evaluation of creep characterizationsof INCOLOY 800H and it's weldmentwhich has high demand in use in Power Plant and Oil & Gas industries. Small Punch Creep Test is used here to find the weakest location in creep consideration of INCOLOY 800H weldment. Tests are performed under 350 N, 450 N at temperature of 700° C. Test specimens were machined from different parts of weldments and prepared in shape of thin disks including Base Metal, Weld Metal and HAZ (heat affected zone) near base metal. To verify the dependence of creep characterization to microstructure, the test results were compared to each other of each location. Highlights: Heat affected zone is the weakest part in INCOLOY 800H weldment. Base Metal and Weld Metal have higher life time than HAZ. HAZ has about 20% lower life time than BM.