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The master curve methodology proposed by Kim Wallin (ASTM E1921-02) has been used to evaluate master curve and reference temperature (T 0 ) from TPB specimen for the material 20MnMoNi55 steel using single temperature and multitemperature method. The effect of test temperature on reference temperature (T 0 ) has been studied for both TPB and CT specimens. A study is performed on the censor parameter M for both TPB and CT specimen and a correction value is suggested for TPB specimen for thedoi:10.1016/j.proeng.2014.11.037 fatcat:uydd6pm5zfhj5dhsywbg3gs7sm