金属学报  1994, Vol. 30 Issue (11): 507-514

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形变温度对Ti_3Al基合金α_2相滑移系的影响

孙福生;高文;曹春晓

北京航空材料研究所

INFLUENCE OF DEFORMATION TEMPERATURE ON α_2-PHASE SLIP SYSTEMS OF A Ti_3Al ALLOY

SUN Fusheng;GAO Wen;CAO Chunxiao(Institute of Aeronautical Materials; Beijing)(Manuscript received 31 August; 1993; in revised form 22 November; 1993)

孙福生;高文;曹春晓. 形变温度对Ti_3Al基合金α_2相滑移系的影响[J]. 金属学报, 1994, 30(11): 507-514.
, , . INFLUENCE OF DEFORMATION TEMPERATURE ON α_2-PHASE SLIP SYSTEMS OF A Ti_3Al ALLOY[J]. Acta Metall Sin, 1994, 30(11): 507-514.

摘要 参考文献 相关文章 Metrics 全文: PDF(593 KB)   摘要: 利用透射电子显微镜，采用双倾双束技术和ｇ·ｂ不可见判据，分析了Ｔｉ－２５Ａｌ－１０Ｎｂ－３Ｖ－１Ｍｏ（ａｔ．－％）合金中α_２相（Ｄ０_（１９）结构）在２５—７００℃拉伸形变时的位错类型和滑移系．结果表明：室温拉伸形变主要源于ａ型位错在棱柱面或基面滑移，如〈１１０〉｛１００｝，〈１１０〉｛０００１｝；和少量＋／２型位错对在棱锥面滑移，如〈１１６〉｛２０１｝；＋／２，型位错密度随形变温度提高而减少，４００℃拉伸形变时出现大量孪晶；７００℃形变时没有＋／２型位错对出现，开动的是主要型位错在棱柱面、基面滑移和型位错对在棱锥面滑移，如〈１１０〉｛２１０｝． 关键词 ： Ｔｉ_３Ａｌ基合金,  形变温度,  滑移系     Abstract：The tensile deformation mechanism of α_2-phase (DO_(19)) in a Ti-25Al-10Nb-3V-1Mo alloy at 25—700℃ was studied. In accordance with . =0 invisibility criterion, dislocation types and slip systems were analysed in a TEM equipped with a side entry goniometer stage capable of a ± 45°tilt on X- and Y-axis operating under two-beam condition. Experimental results show that the majority of slip systems activated at 25—700℃ are type dislocation on prismatic and basal planes. A few of / 2 type dislocation pairs on pyramidal plane are found at 25℃, so a large amount of twinning found at 400℃.The density of/2 type dislocation pairs decrease with the increase of temperature. No/2 type dislocation pair is found at 700℃, but some type dislocation pairs are activated at 700℃. Correspondent:SUN Fusheng, senior engineer,（Institute of Aeronautical Materials, Beijing 100095） Key words： Ti_3Al alloy    deformation temperature    slip system 收稿日期: 1994-11-18      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 孙福生 高文 曹春晓 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1994/V30/I11/507 1BlackburnMJ,SmithMP．AirForceTechRepAFWAL-TR-81-4046,19812LipsittHA．In:C．C．Koch,LiuCT．StoloffNSeds．,HighTemperatureOrderedIntermetallicAl-loys,Pittsburgh,PA:MRS,1985:3513YongWJS．MetallTrans,1982:18A:3244CourtSA,LorettoMH,FraserHL．ScrMetall,1987;21:9975ThomasM,VasselA,VeyssiereP．ScrMetall,1987;21:5016WilliamsJC．In:WilliamsJC,BeloyAFeds．,TitaniumandTitaniumAlloys,Vol．2,NewYork:PlenumPress,1982:14777 SastrySM,LipsittHA．MetallTrans,1977;8A:15438BanerjeeD,GogiaAK．NandyTK,MetallTrans,1990;21A:6279孙福生,李成功,曹春晓．材料工程,1992;7-9:3210FriedalJ．Dislocation．PergamonPress,1964p [1] 陈守东,刘相华,刘立忠,宋孟. Cu极薄带轧制中滑移与变形的晶体塑性有限元模拟*[J]. 金属学报, 2016, 52(1): 120-128. [2] 刘江涛 王中光 尚建库. [110]和[112]取向β-Sn单晶体的形变行为[J]. 金属学报, 2008, 44(12): 1409-1414. [3] 惠卫军; 田鹏; 董瀚; 苏世怀; 于同仁; 翁宇庆 . 形变温度对中碳钢组织转变的影响[J]. 金属学报, 2005, 41(6): 611-616 . [4] 苏继龙; 胡更开 . γ-TiAl基PST晶体的屈服应力及孪晶影响的细观力学研究[J]. 金属学报, 2005, 41(12): 1243-1248 . [5] 张勇;张少卿;陶春虎. 氢化Ti-25Al-10Nb-3V-1Mo铸态合金的热压缩行为及其显微组织[J]. 金属学报, 1996, 32(3): 235-240. [6] 艾素华;关少轩;冯泽民;葛景岩. Ti_3Al基合金的拉伸形变和断裂[J]. 金属学报, 1995, 31(6): 286-288. [7] 廖波;王天生;杨柯;苑辉;肖福仁;李依依. 加氢热化学处理对Super-α2合金组织的影响[J]. 金属学报, 1995, 31(5): 223-228. [8] 卢斌;李东;崔玉友. Ti_3Al基合金中α_2/α_2+β相界的计算与测定[J]. 金属学报, 1995, 31(21): 413-417. [9] 吴建生;林栋梁. 单晶Nb拉伸、压缩及恒应变疲劳后的滑移系和滑移特征[J]. 金属学报, 1994, 30(5): 187-194. [10] 孙福生;马济民;曹春晓. Ti_3Al基合金超塑形变的微观观察[J]. 金属学报, 1994, 30(22): 465-470. [11] 徐瑞;徐达鸣;李庆春;崔玉友;李东;胡壮麒. 快速凝固Ti_3Al基合金的显微组织[J]. 金属学报, 1994, 30(12): 545-550. [12] 张丙;万晓景;王建国;张莹. Ti—24Al—11Nb—3V—1Mo合金热稳定性研究[J]. 金属学报, 1993, 29(10): 23-27. [13] 宁华;张立新. 冷轧Fe-P合金退火过程中磷偏聚行为的金相研究[J]. 金属学报, 1990, 26(5): 34-38. Viewed Full text Abstract Cited   Shared      Discussed