Influence of Oxidation to Small Punch Creep Test

Jian Hua Shan; Zhen Mei Qian; Xiang Ling

doi:10.4028/www.scientific.net/KEM.353-358.461

Paper Titles

The Effect of Heat Treatment on the Properties of LF9 Alloy
p.442

Creep Behavior of Functionally Graded Material under In-Plane Bending Moment
p.449

Experimental Study on Residual Stress of K24 Superalloy in Laser Cladding Zone by Laser Shock Processing
p.453

Effect of Tungsten Addition on Properties of Ni-Based Alloy Sheet Prepared by EB-PVD
p.457

Influence of Oxidation to Small Punch Creep Test
p.461

Tensile Properties and Fracture Characteristics of Spray Deposited Ni₃Al-Based Superalloy(IC6)
p.465

Compressive Properties of Quartzite Microcrystallite Glass Ceramics
p.469

Finite Element Study of Factor Effects on Residual Stresses and Thermal Deformation of Brazed Plate-Fin Structure
p.473

Research on Physical Significance of the Larson-Miller Parameter and its Electron Theory for Heat-Resistant Steels
p.477

HomeKey Engineering MaterialsKey Engineering Materials Vols. 353-358Influence of Oxidation to Small Punch Creep Test

Influence of Oxidation to Small Punch Creep Test

Abstract:

In order to validate a procedure for creep rupture tests using small punch specimens, the influences of oxidation on the creep deflection curve, rupture time and ductility of miniature specimens were investigated. Using disc test specimens of 10mm in diameter and 0.5mm in thickness, a variety of small punch creep (SPC) tests for Cr5Mo steel at the condition of 550°C-404N and 650°C-189N under the protection of different Argon flow and in air atmosphere were firstly carried out. Metallographic observations, micro-hardness testing and measurement for these specimens of SPC test were performed. It indicates that the oxidized layer of specimens integrates and the residual thickness of specimens increases, while the hardness of specimens increases with the increment of the Argon flow. Moreover, the different oxidation degrees of specimens with the surface morphology were compared in this paper. The test results show the rupture time of specimens can be effectively prolonged by the protection of different Argon flow.