摘要
采用机械合金化+热压方式制备了xMgO/Nb-22.5Cr(x=0,0.06,0.12,0.24,0.36,摩尔分数/%)合金,研究了MgO对合金组织及性能的影响。结果表明,MgO的添加并未对合金的物相产生明显影响,合金的主要物相仍由Nb固溶体相和NbCr2相组成。适量MgO的添加,不仅能提高合金的强度,同时还提高了合金的塑、韧性,0.12MgO/Nb-22.5Cr合金的室温抗压强度和塑性应变分别为3 258 MPa和18%,相比于Nb-22.5Cr合金提高了18%和227%。
xMgO/Nb-22.5 Cr(x=0, 0.06, 0.12, 0.24, 0.36,in atomic fraction) alloys were prepared by mechanical alloying and hot pressing. The effects of MgO on microstructures and properties of Nb-22.5 Cr alloy were investigated. The results show that the phase constituent of Nb-22.5 Cr alloy has the absence of obvious change by adding MgO, which mainly consists of Nb solid solution and NbCr2.The strength, plasticity and toughness of Nb-22.5 Cr alloy can be improved by adding proper amount of MgO. The room-temperature compressive strength and plastic strain of 0.12 MgO/Nb-22.5 Cr reach up to 3 258 MPa and 18%,increased by 18% and 227% compared to those of Nb-22.5 Cr alloy, respectively.
作者
盛彦哲
彭泽宇
唐敏
范瑜鑫
钟曾毅
邓莉萍
鲁世强
雷志立
Sheng Yanzhe;Peng Zeyu;Tang Min;Fan Yuxin;Zhong Zengyi;Deng Liping;Lu Shiqiang;Lei Zhili(School of Materials Science and Engineering,Nanchang Hangkong University;School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University;Department of Mechanical Engineering,Fengcheng Secondary Vocational School)
出处
《特种铸造及有色合金》
CAS
北大核心
2020年第5期553-556,共4页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助项目(51964034)
江西省自然科学基金资助项目(20161BAB206113)
江西省教育厅科技计划资助项目(CJJ160677),南昌航空大学博士启动基金资助项目(EA201901206)
江西省教育厅落地计划资助项目(KJLD14056)
南昌航空大学大学生科技创新项目(2019CL034)。
