| 放电等离子烧结制备Ti-22Al-25Nb合金及致密化机理 |
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| 引用本文： | 贾建波,杨越,孙威,仲晓晓,徐岩,顾勇飞,骆俊廷. 放电等离子烧结制备Ti-22Al-25Nb合金及致密化机理[J]. 中国有色金属学报, 2019, 0(7): 1399-1407 |
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| 作者姓名： | 贾建波 杨越 孙威 仲晓晓 徐岩 顾勇飞 骆俊廷 |
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| 作者单位： | 燕山大学先进锻压成形技术与科学教育部重点实验室;燕山大学国家冷轧板带装备及工艺工程技术研究中心 |
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| 基金项目： | 河北省自然科学基金资助项目(E2016203157);国家自然科学基金资助项目(51875502)~~ |
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| 摘 要： | 以Ti-22Al-25Nb(摩尔分数,%)预合金粉末为实验初始原料,采用放电等离子烧结工艺(SPS)方法,在温度为950~1200℃,保温时间为10~20min,压力为35~80MPa的条件下制备晶粒小、组织致密的粉末冶金Ti-22Al-25Nb合金。研究烧结温度、烧结压力和保温时间对预合金粉末致密化过程的影响,分析粉末的烧结致密化机理,揭示烧结温度、烧结压力和保温时间对Ti-22Al-25Nb烧结合金的相对密度、相组成、显微组织以及力学性能的影响规律,明确烧结合金的室温断裂机制。结果表明:经950℃、80MPa、10min烧结的Ti-22Al-25Nb合金相对密度达到99.43%,具有更优异的综合力学性能,其室温伸长率、屈服强度和抗拉强度分别达到9.38%、933.57MPa和990.01MPa。
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| 关 键 词： | TI-22AL-25NB合金 放电等离子烧结 致密化 力学性能 |
Preparation and densification mechanism of Ti-22Al-25Nb alloy prepared by spark plasma sintering |
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| JIA Jian-bo,YANG Yue,SUN Wei,ZHONG Xiao-xiao,XU Yan,GU Yong-fei,LUO Jun-ting. Preparation and densification mechanism of Ti-22Al-25Nb alloy prepared by spark plasma sintering[J]. The Chinese Journal of Nonferrous Metals, 2019, 0(7): 1399-1407 |
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| Authors: | JIA Jian-bo YANG Yue SUN Wei ZHONG Xiao-xiao XU Yan GU Yong-fei LUO Jun-ting |
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| Affiliation: | (Education Ministry Key Laboratory of Advanced Forging and Stamping Technology and Science,Yanshan University,Qinhuangdao 066004;National Engineering Research Center for Equipment and Technology of C.S.R,Yanshan University,Qinhuangdao 066004,China) |
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| Abstract: | JIA Jian-bo;YANG Yue;SUN Wei;ZHONG Xiao-xiao;XU Yan;GU Yong-fei;LUO Jun-ting(Education Ministry Key Laboratory of Advanced Forging and Stamping Technology and Science,Yanshan University,Qinhuangdao 066004;National Engineering Research Center for Equipment and Technology of C.S.R,Yanshan University,Qinhuangdao 066004,China) |
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| Keywords: | Ti-22Al-25Nb alloy spark plasma sintering densification mechanical property |
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