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| Effect of Ti and Co on the Microstructure and Mechanical Property of Reduced Activation 9Cr3W Steel |
| Zumrat LI Shengzhi SUN Feng** |
| (School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240) |
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Cite this article:
Zumrat LI Shengzhi SUN Feng**. Effect of Ti and Co on the Microstructure and Mechanical Property of Reduced Activation 9Cr3W Steel. Chinese Journal of Materials Research, 2013, 27(1): 43-48.
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Abstract ABSTRACT The feasibility of replacing high activation element Co by low activation element Ti in reduced activated 9Cr3W steel was investigated in this paper. JMatPro phase diagram calculations were used as a theoretical guidance for preparing and heat treatment of experimental steels. The microstructure and mechanical properties of experimental steels were investigated by OM and SEM observation, tensile and creep tests. The results show that Ti and Co both can improve the creep properties of base steel 9Cr3W. The δ ferrite caused by Ti addition can be resolved into the matrix by choosing proper heat treatment parameters. 1%Co in reduced activation 9Cr3W steel can be replaced by 0.03%Ti.
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