金属学报  1998, Vol. 34 Issue (9): 908-914

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Ti-47Al-2Mn-2Nb合金动态拉伸性能的研究

王瑜;林栋梁;周元鑫;夏源明;C.C.Law

上海交通大学材料科学系;教育部高温材料及高温测试开放实验室;上海;200030;上海交通大学材料科学系;教育部高温材料及高温测试开放实验室;上海;200030;中国科学技术大学近代力学系;合肥市;230026;中国科学技术大学近代力学系;合肥市;230026;MaterialsandMechanicsEngineering;UnitedTechnologiesCompany-Pratt&Whittney;400MainStreet;EastHartford;CT06108;U.S.A

DYNAMIC TENSILE PROPERTIES OF Ti-47Al-2Mn-2Nb ALLOY

WANG Yu; LIN Dongliang (T. L. Lin) (Department of Materials Science; The Open Laboratory of Education Ministry for High-Temperature Materials and Tests; Shanghai Jiao Tong University; Shanghai; 200030)ZHOU Yuanxin; XIA Yuanming (Department of Modern Dynamics; University of Science and Technology of China; Hefei 230026)C. C. Law (Materials and Mechanics Engineering; United Technologies Company-Pratt & Whittney 400 Main Street; East Hartford; CT 06108; U. S. A.)Correspondent: LIN Dongliang; professon; Tel: (021)62812544(O); (021)62835352(H);Fax:(021)62820892; Email: dllin@mail.sjtu.edu.cn.

王瑜;林栋梁;周元鑫;夏源明;C.C.Law. Ti-47Al-2Mn-2Nb合金动态拉伸性能的研究[J]. 金属学报, 1998, 34(9): 908-914.
, , , , . DYNAMIC TENSILE PROPERTIES OF Ti-47Al-2Mn-2Nb ALLOY[J]. Acta Metall Sin, 1998, 34(9): 908-914.

摘要 参考文献 相关文章 Metrics 全文: PDF(1232 KB)   摘要: 采用自制的Hopkinson拉杆装置，在20—1000s－1应变速率范围内研究了具有近全片层组织的Ti－47Al—2Mn—2Nb合金的拉伸力学性能，并与准静态拉伸性能相比较试验发现动态强度明显高于静态强度，前者和应变速率之间遵循线性关系，后者和应变速率之间遵循半对数线性关系；室温塑性随应变速率变化而波动，但变化范围不大.扫描电镜断口分析结果表明，动态与静态断裂方式都以穿晶解理为主，局部区域伴有沿晶开裂. 关键词 ： TiAl合金,  Hopkinson拉杆,  动态力学性能     Abstract：Room-temperature tensile properties of Ti-47Al-2Mn-2Nb alloy with near lamellar (NL) microstructures were investigated at the strain rates between 20 and 1000 s-1 using a self-designed Split-Hopkinson tensile bar setup with a rotating disk. And a comparison was made between static and dynamic tensile properties. It was found that tensile ductility fluctuates within a narrow range with the variation of the strain rate f dynamic elongation is almost the same as the static elongation. But dynamic strengths (d) of the alloy and their strain rate sensitivity are obviously higher than those under static strain rates, and there exists linear relationship between static strength (s) and the logarithm of the strain rate(s= A + Blu), and between d and the strain rate itself(d = C + D). Fractography analysis indicates that the alloy fractures in a mixed mode of predominant transgranular cleavage and minor intergranular cracking under static and dynamic strain rates. Environmental effect is excluded from the main cause for the room-temperature brittleness of the investigated alloy. Key words： titanium aluminide    SHTB    dynamic tensile properties 收稿日期: 1998-09-18      基金资助:国家自然科学基金!59331011 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 王瑜 林栋梁 周元鑫 夏源明 C.C.Law 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1998/V34/I9/908 1 Kim Y W J Met, 1994; 46: 30 2 McAandrew J B, Kessler H D.J Met, 1956; 8: 1348 3 Maloy S A, Grny III G T Acta Mater, 1996; 44: 1741 4 Chin E S C,Weerasooriya T, Woolsey P.In:Kim Y W, Wangner R, Yamaguchi M eds., Gamma Titanium Aluminides, TMS, Warrendale, PA, 1995: 451 5 王瑜,林栋梁.金属学报,1998;34:255(Wang Y, Lin D(Lin T L), Liu J, Law C C. Acta Matall Sin, 1998; 34: 255) 6 Xia Y, Zhou Y. Acta Mech Sin, 1996; 12: 243 7 王瑜,林栋梁,周元鑫,夏源明,Law C C.金属学报,1998; 34: 915(Wang Y, Lin D L(Lin T L), Zhou Y X, Xia Y M, Law C C. Acta Metall Sin, 1998; 34: 915) 8 Liu C T, Kim Y W. Scr Metall Mater, 1992; 27: 599 9 Nadgornyi E. ProgMater Sci, 1988; 31: 1 10 Regazzoni G, Kocks U F, Follansbee P S. Acta Metall, 1987; 35: 2865 11 Harding J Arch Mech, 1975 27: 715 [1] 李小兵, 潜坤, 舒磊, 张孟殊, 张金虎, 陈波, 刘奎. W含量对Ti-42Al-5Mn-xW合金相转变行为的影响[J]. 金属学报, 2023, 59(10): 1401-1410. [2] 刘仁慈, 王鹏, 曹如心, 倪明杰, 刘冬, 崔玉友, 杨锐. 700℃热暴露对 β 凝固 γ-TiAl合金表面组织及形貌的影响[J]. 金属学报, 2022, 58(8): 1003-1012. [3] 陈玉勇, 叶园, 孙剑飞. TiAl合金板材轧制研究现状[J]. 金属学报, 2022, 58(8): 965-978. [4] 陈伟, 章环, 牟娟, 朱正旺, 张海峰, 王沿东. 显微组织和应变速率对TC4合金动态力学性能和绝热剪切带的影响[J]. 金属学报, 2022, 58(10): 1271-1280. [5] 李天瑞, 刘国怀, 于少霞, 王文娟, 张风奕, 彭全义, 王昭东. 直接包套轧制铸态Ti-46Al-8Nb合金的组织特征及热变形机制[J]. 金属学报, 2020, 56(8): 1091-1102. [6] 刘先锋, 刘冬, 刘仁慈, 崔玉友, 杨锐. Ti-43.5Al-4Nb-1Mo-0.1B合金的包套热挤压组织与拉伸性能[J]. 金属学报, 2020, 56(7): 979-987. [7] 王希,刘仁慈,曹如心,贾清,崔玉友,杨锐. 冷却速率对β凝固γ-TiAl合金硼化物和室温拉伸性能的影响[J]. 金属学报, 2020, 56(2): 203-211. [8] 陈占兴,丁宏升,陈瑞润,郭景杰,傅恒志. 脉冲电流作用下TiAl合金凝固组织演变及形成机理[J]. 金属学报, 2019, 55(5): 611-618. [9] 廖依敏, 丰敏, 陈明辉, 耿哲, 刘阳, 王福会, 朱圣龙. TiAl合金表面搪瓷基复合涂层与多弧离子镀NiCrAlY涂层的抗热腐蚀行为对比研究[J]. 金属学报, 2019, 55(2): 229-237. [10] 金浩, 贾清, 刘荣华, 线全刚, 崔玉友, 徐东生, 杨锐. 籽晶制备及Ti-47Al合金PST晶体取向控制[J]. 金属学报, 2019, 55(12): 1519-1526. [11] 潘宇, 路新, 刘程程, 孙健卓, 佟健博, 徐伟, 曲选辉. Sn对TiAl基合金烧结致密化与力学性能的影响[J]. 金属学报, 2018, 54(1): 93-99. [12] 李天瑞, 刘国怀, 徐莽, 牛红志, 付天亮, 王昭东, 王国栋. Ti-43Al-4Nb-1.5Mo合金包套锻造与热处理过程的微观组织及高温拉伸性能[J]. 金属学报, 2017, 53(9): 1055-1064. [13] 陈占兴,丁宏升,刘石球,陈瑞润,郭景杰,傅恒志. 直流电流对Ti-48Al-2Cr-2Nb合金组织和性能的影响[J]. 金属学报, 2017, 53(5): 583-591. [14] 王刚,徐磊,崔玉友,杨锐. TiAl预合金粉末热等静压致密化机理及热处理对微观组织的影响*[J]. 金属学报, 2016, 52(9): 1079-1088. [15] 杨亮,高叔博,王艳丽,叶腾,宋霖,林均品. Si对高Nb-TiAl合金组织及室温拉伸性能的影响*[J]. 金属学报, 2015, 51(7): 859-865. Viewed Full text Abstract Cited   Shared      Discussed