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December 1, 1990Materials Science and Technology

Effect of niobium on creep and creep crack growth of cast Ni–Cr austenitic steel

S. J. Zhu D. J. Li You Wang Weigong Tian Shugen Xu F. G. Wang

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Abstract

An investigation of the effect of Nb on creep properties and creep crack growth rate in a 25Cr–35Ni–0·4C (wt-%) cast steel at 871 and 950°C was carried out. Tensile tests were also carried out at room temperature, 871, and 950°C. The tensile strength and elongation increased with an increase in Nb content at high temperatures. There existed an optimum Nb content for the creep properties and creep crack growth rate. Creep crack growth is controlled by creep deformation.MST/1222

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Cite This Study

Zhu et al. (1990) studied this question.

synapsesocial.com/papers/6a755fcfe2936089dd033af4 https://doi.org/10.1179/mst.1990.6.12.1193

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