金属学报  2008, Vol. 44 Issue (8): 995-1000

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轻质高强NiTi形状记忆合金制备及其超弹性行为

李大圣;张宇鹏;熊志鹏;张新平

华南理工大学材料科学与工程学院材料科学与技术研究所

LOW DENSITY AND HIGH STRENGTH NiTi MEMORY ALLOYS WITH CONTROLLABLE PORE CHARATERISTICS AND THEIR SUPERELASTICITY

LI Da-Sheng;yupeng zhang;zhipeng xiong;Xinping Zhang

华南理工大学机械工程学院

李大圣; 张宇鹏; 熊志鹏; 张新平 . 轻质高强NiTi形状记忆合金制备及其超弹性行为[J]. 金属学报, 2008, 44(8): 995-1000 .
, , , . LOW DENSITY AND HIGH STRENGTH NiTi MEMORY ALLOYS WITH CONTROLLABLE PORE CHARATERISTICS AND THEIR SUPERELASTICITY[J]. Acta Metall Sin, 2008, 44(8): 995-1000 .

摘要 参考文献 相关文章 Metrics 全文: PDF(1296 KB)   摘要: 采用球形尿素颗粒预造孔工艺结合梯级粉末烧结方法制备出孔形规则、孔径大的轻质高 强多孔NiTi形状记忆合金. 通过控制造孔剂(尿素)的含量可有效调节多孔合金的孔隙特征, 获得孔径均匀、孔形圆整和孔隙率可控的样品, 其中孔径为296-732 um, 孔隙率为31%-61.6%; 尿素形状和尺寸对多孔合金的孔隙特征有决定性影响, 具 有几何形态遗传性; 尿素对多孔NiTi合金的组成相影响很小, 相变仍具有马氏体相变特征; 合金具有优良的力学性能和稳定的线性超弹性. 关键词 ： 多孔NiTi合金,  尿素造孔剂,  粉末烧结法     Abstract：Low density and high strength NiTi shape memory alloys with regular pore shape and large pore size were fabricated by using temporary space-holder, CO(NH2)2, and a conventional sintering process. The pore characteristics can be tailored by adjusting urea particle features and the amount added, and the fabricated porous NiTi alloys show uniform pore size and regular pore shape with pore size and porosity in the ranges of 296-732 µm and 31%-61.6%, respectively. The results manifest that urea particle shape and size have a crucial influence on pore characteristics of porous alloys and show a geometrical heredity effect. The use of urea hardly has any effect on phase constituents of porous NiTi alloys and the martensitic transformation exhibits early. The fabricated porous NiTi alloys show excellent mechanical properties including a steady linear superelasticity. Key words： porous NiTi alloy    urea space-holder    powder sintering    controllable pore features    superelasticity 收稿日期: 2007-10-22      ZTFLH:  TB383   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 李大圣 张宇鹏 熊志鹏 张新平 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2008/V44/I8/995 [1]Itin V I,Gyunter V E,Shabalovskaya S A,Sachdeva R L C.Mater Charact,1994;32:179 [2]Kujala S,Ryhnen J,Danilov A,Tuukkanen J.Biomater, 2003;24:4691 [3]Li Y H,Rao G.B,Rong L J,Li Y Y,Ke W.Mater Sci Eng,2003;A363:356 [4]Kim J S,Kang J H,Kang S B,Yoon K S,Kwon Y S.Adv Eng Mater,2004;6:403 [5]Greiner C,Oppenheimer S M,Dunand D C.Acta Bio- mater,2005;1:705 [6]Zhang X P,Zhang Y P.Chin J Mater Res,2007;21:561 (张新平，张宇鹏．材料研究学报，2007；21：561) [7]Zhang Y P,Li D S,Zhang X P.Scr Mater,2007;57:1020 [8]Zhang Y P,Yuan B,Zeng M Q,Chung C Y,Zhang X P. J Mater Process Technol,2007;192-193:439 [9]Zhang X P,Zhang Y P,Chung C Y.Chin Pat. 200610124394.7,2006 (张新平，张宇鹏，钟志源．中国专利，200610124394．7，2006) [10]Zhang Y P,Zhang X P,Chung C Y.Acta Metall Sin,2007; 43:1221 (张宇鹏，张新平，钟志源．金属学报，2007；43：1221) [11]Zhang X P,Li D S,Zhang Y P,Chin Pat.200710030822.4, 2007 (张新平，李大圣，张宇鹏．中国发明专利，200710030822．4，2007) [12]ASTM.ASTM E9-89a,West Conshohocken,PA,2000 [13]Otsuka K,Wayman C M.Shape Memory Materials.Cam- bridge,UK:Cambridge University Press,1998:51 [14]Coluzzi B,Biocarini A,Campanella R,Mazzolai G,Trotta L,Mazzolai F M.J Alloys Compd,2000;310:300 [15]van Humbeeck J.J Alloys Compd,2003;355:58 [16]Li B Y,Rong L J,Li Y Y.Mater Sci Eng,2000;A281: 169 [17]Zhao Y,Taya M,Kang Y,Kawasaki A.Acta Mater,2005; 53:337 [18]Biswas A.Acta Mater,2005;53:1415 [19]Barrabés M,Sevilla P,Planell J A,Gil F J.Mater Sci Eng,2008;C28:23 [1] 张宇鹏; 张新平; 钟志源 . 梯度孔隙率大孔隙尺寸NiTi形状记忆合金制备及其相变和超弹性行为[J]. 金属学报, 2007, 43(11): 1221-1227 . [2] 姜海昌; 杜华; 谢惠民; 戎利建 . 扫描云纹干涉法研究多孔NiTi形状记忆合金的微观形变特性[J]. 金属学报, 2006, 42(11): 1153-1157 . Viewed Full text Abstract Cited   Shared      Discussed