Abstract
Small punch creep (SPC) test has an important role in the remaining life calculation of in-service components functioning at high temperature and harsh ambience. Since the extraction of conventional full scale specimens from the components in service impairs its integrity, SPC test can be used as an alternative technique. This test method requires very thin disc similar to those needed for transmission electron microscopy (~ 3 mm diameter and 0.5 mm thick). The pre-requisite to employ this test technique is to establish correlations between uniaxial creep and SPC tests in priori. The purpose and scope of this work is to present briefly the principle of SPC testing method in comparison with uniaxial creep test. The differences in terms of specimen geometry and deformation process have been clearly brought out. The correlations developed by several researchers for determining the creep properties from SPC test along with uniaxial creep results for comparison is presented. The contributions by several authors in the direction of numerical simulation and fractography of SPC test is also briefed.
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Arunkumar, S. Small Punch Creep Test: An Overview. Met. Mater. Int. 27, 1897–1914 (2021). https://doi.org/10.1007/s12540-020-00783-w
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DOI: https://doi.org/10.1007/s12540-020-00783-w