A study of high cycle fatigue life and its correlation with microstructural parameters in IN713C nickel-based superalloy

Liu，Gang1; Cantó，Jordi Salvat2; Birosca，Soran3; Wang，Shuai1; Zhao，Yonghua1

2023-06-22

10.1016/j.msea.2023.145161

Materials Science and Engineering: A   Impact Factor & Quartile

0921-5093

1873-4936

IN713C nickel-based superalloy is widely used in the form of turbine blades in the automobile industry. High cycle fatigue (HCF) or very-HCF is one of the major failure modes for the alloy. The significant grain structure/size variations produced during the casting process are supposed to affect its fatigue life. In the present study, IN713C cast bars with different grain structures and grain size were HCF tested under similar stress level (∼300 MPa) at 650 °C. The fatigue life, varying from ∼87,000 to 10 × 10 cycles, mainly determined by the size of porosity and faceting grain. Size of porosity determines the time of initiation of faceting and crack, i.e., the crack initiation stage, which occupies the major part of fatigue life. Smaller pore size leads to delay of faceting and higher fatigue life. Whilst size of facet has profound effects in the crack propagation stage. Smaller facet (grain) size leads to lower crack propagation rate and longer loading cycles, and finally contributes to higher fatigue life. This research revealed the beneficial effect of smaller grain size on fatigue property from the perspective of reducing initial crack propagation rate, which has rarely been reported before.

Casting porosity Grain size High cycle fatigue IN713C Nickel-based superalloy

SCI

English

First ; Corresponding

Basic and Applied Basic Research Foundation of Guangdong Province[2022A1515110637];

Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:001040201100001

ELSEVIER SCIENCE SA

MATERIALS SCIENCE

2-s2.0-85162193527

Scopus

1.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,1088 Xueyuan Avenue,518055,China
2.Materials Research Centre,College of Engineering,Swansea University,Swansea,Bay Campus,SA1 8EN,United Kingdom
3.School of Mechanical and Design Engineering,University of Portsmouth,Portsmouth,PO1 3DJ,United Kingdom

Liu，Gang,Cantó，Jordi Salvat,Birosca，Soran,et al. A study of high cycle fatigue life and its correlation with microstructural parameters in IN713C nickel-based superalloy[J]. Materials Science and Engineering: A,2023,877.

Liu，Gang,Cantó，Jordi Salvat,Birosca，Soran,Wang，Shuai,&Zhao，Yonghua.(2023).A study of high cycle fatigue life and its correlation with microstructural parameters in IN713C nickel-based superalloy.Materials Science and Engineering: A,877.

Liu，Gang,et al."A study of high cycle fatigue life and its correlation with microstructural parameters in IN713C nickel-based superalloy".Materials Science and Engineering: A 877(2023).