Investigation of creep behavior of Ni3Al-base superalloy by small punch creep

Yan Cao; Abdeliazim Mustafa Mohamed; Samira Moshtaghi; Morteza Taheri; Mohammad Javad Torkamany

doi:10.1016/j.vacuum.2021.110101

Investigation of creep behavior of Ni₃Al-base superalloy by small punch creep

Yan Cao
, Abdeliazim Mustafa Mohamed
, Samira Moshtaghi
, Morteza Taheri
, Mohammad Javad Torkamany

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

26 Scopus citations

Abstract

This study aimed to investigate the creep behavior of Ni₃Al-base superalloy through small punch creep test. For this purpose, Rene 80 specimens in both casting and heat treatment conditions, after welding by Nd:YAD pulsed-laser, were subjected to a small punch creep test at 700 °C temperature and forces 350 N, 450 N. The results showed that the lowest and highest creep life in the cast specimen is related to heat-affected zone and weld metal, respectively. Coarsening, liquation, and grain boundary cracking in heat-affected zone were the most important factors in reducing creep life. Cr-Mo and Ni-Zr phases were the most important factors that were eliminated in heat-treatment specimen due to dissolution of these factors.

Original language	English
Article number	110101
Journal	Vacuum
Volume	187
DOIs	https://doi.org/10.1016/j.vacuum.2021.110101
State	Published - May 2021
Externally published	Yes

Keywords

Creep
HAZ
Liquation cracking
NiAl-Base superalloy
SPCT

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10.1016/j.vacuum.2021.110101

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title = "Investigation of creep behavior of Ni3Al-base superalloy by small punch creep",

abstract = "This study aimed to investigate the creep behavior of Ni3Al-base superalloy through small punch creep test. For this purpose, Rene 80 specimens in both casting and heat treatment conditions, after welding by Nd:YAD pulsed-laser, were subjected to a small punch creep test at 700 °C temperature and forces 350 N, 450 N. The results showed that the lowest and highest creep life in the cast specimen is related to heat-affected zone and weld metal, respectively. Coarsening, liquation, and grain boundary cracking in heat-affected zone were the most important factors in reducing creep life. Cr-Mo and Ni-Zr phases were the most important factors that were eliminated in heat-treatment specimen due to dissolution of these factors.",

keywords = "Creep, HAZ, Liquation cracking, NiAl-Base superalloy, SPCT",

author = "Yan Cao and Mohamed, \{Abdeliazim Mustafa\} and Samira Moshtaghi and Morteza Taheri and Torkamany, \{Mohammad Javad\}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = may,

doi = "10.1016/j.vacuum.2021.110101",

language = "English",

volume = "187",

journal = "Vacuum",

issn = "0042-207X",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Investigation of creep behavior of Ni3Al-base superalloy by small punch creep

AU - Cao, Yan

AU - Mohamed, Abdeliazim Mustafa

AU - Moshtaghi, Samira

AU - Taheri, Morteza

AU - Torkamany, Mohammad Javad

PY - 2021/5

Y1 - 2021/5

N2 - This study aimed to investigate the creep behavior of Ni3Al-base superalloy through small punch creep test. For this purpose, Rene 80 specimens in both casting and heat treatment conditions, after welding by Nd:YAD pulsed-laser, were subjected to a small punch creep test at 700 °C temperature and forces 350 N, 450 N. The results showed that the lowest and highest creep life in the cast specimen is related to heat-affected zone and weld metal, respectively. Coarsening, liquation, and grain boundary cracking in heat-affected zone were the most important factors in reducing creep life. Cr-Mo and Ni-Zr phases were the most important factors that were eliminated in heat-treatment specimen due to dissolution of these factors.

AB - This study aimed to investigate the creep behavior of Ni3Al-base superalloy through small punch creep test. For this purpose, Rene 80 specimens in both casting and heat treatment conditions, after welding by Nd:YAD pulsed-laser, were subjected to a small punch creep test at 700 °C temperature and forces 350 N, 450 N. The results showed that the lowest and highest creep life in the cast specimen is related to heat-affected zone and weld metal, respectively. Coarsening, liquation, and grain boundary cracking in heat-affected zone were the most important factors in reducing creep life. Cr-Mo and Ni-Zr phases were the most important factors that were eliminated in heat-treatment specimen due to dissolution of these factors.

KW - Creep

KW - HAZ

KW - Liquation cracking

KW - NiAl-Base superalloy

KW - SPCT

UR - https://www.scopus.com/pages/publications/85100408197

U2 - 10.1016/j.vacuum.2021.110101

DO - 10.1016/j.vacuum.2021.110101

M3 - Article

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SN - 0042-207X

VL - 187

JO - Vacuum

JF - Vacuum

M1 - 110101

ER -

Investigation of creep behavior of Ni₃Al-base superalloy by small punch creep

Abstract

Keywords

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