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Effect of triaxial state of stress on creep rupture behaviour of 2.25Cr–1Mo steel has been investigated by performing creep tests on plain and circumferential U-notch specimens of different notch acuity ratios ranging from 1 to 20. The creep rupture life of the material was found to increase in the presence of notch and the strengthening effect tends to saturate at higher notch acuity ratio. Fractographic...
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