The hot forging behaviour and its effects on the oxidation behaviour of W-Cr alloy

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• 作者：Yunping Li^a ; ^{lyping@imr.tohoku.ac.jp" class="auth_mail} ; Peng Li^b ; Huakang Bian^b ; Ning Tang^a ; Yuichiro Koizumi^a ; Akihiko Chiba^a
• 关键词：C. Interfaces ; A. Alloy ; C. Oxidation
• 刊名：Corrosion Science
• 出版年：June, 2014
• 年：2014
• 卷：83
• 期：Complete
• 页码：367-374
• 全文大小：4200 K

文摘

For the first time, hot compression of a sintered W-20Cr-20Mo-1.5Pd alloy was performed to improve oxidation resistance. Residual pores in as-sintered alloy were hypothesized to be eliminated through sliding of the viscous Pd-Cr-containing grain boundary during compression at 10^鈭? s^鈭? and 1350 掳C, which increased the alloy鈥檚 oxidation resistance. Because of sufficient Cr from the Pd-Cr phase near the grain boundary after hot compression, Cr could transfer more efficiently into the Cr-depleted zone, and therefore, the oxide film/matrix interface was much stronger and showed fewer interfacial cracks than the as-sintered alloy did.