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and the higher ratio of Ti to Ni on the surface. From the aforementioned literature survey, it can be seen that the results about corrosion resistance of laser-welded NiTi alloy are contradictory. Corrosion.... References [1] Ogata Y, Takatugu M, Kunimasa T, Uenishi K, Kobayashi K F. Tensile strength and pseudo-elasticity of YAG laser spot melted Ti-Ni shape memory alloy wires [J]. Materials Transactions, 2004......
electrode metal hydride materials are more attractive due to their variety: AB5-type rare-earth alloy[1, 3], AB2 Laves alloy[4, 8-9], V-based solid solution alloy[5], Ti-Ni series[7, 10], AB3-type rare... for Ti-Zr-V-Ni-Cr alloy electrode[J]. International Journal of Hydrogen Energy, 2007, 32(5): 537-541. [5] TSUKAHARA M, TAKAHASHI K, ISOMURA A, SAKAI T. Influence of oxygen on hydrogen storage......
在的普遍现象,图8(a)中沿晶面部分区域原子的不规则排列引起晶面的弯曲,从而造成局部区域原子面间距不一致,从[001]晶带轴的高分辨像也能看出在晶面上部分区域原子不规则排列形成的纳米团簇,如图8(b)所示,这种畸变也造成了选区电子衍射谱主衍射斑点之间由于漫散射而产生的衍射条纹,如图8(b)插图所示.这些纳米尺度的团簇很可能是马氏体相以纳米尺度团簇的形态分布在奥氏体基体中,这与在Ti-Ni合金系中发...形状记忆合金是最近十几年发展起来的一种新型磁性功能材料,具有磁性形状记忆效应,可恢复大应变[1],大磁电阻[2],霍尔效应[3],巨磁热效应[4]等丰富的物理行为,引起了人们的广泛关注.目前已开发了多种磁性形状记忆合金,如Ni-Mn-Ga[5],Ni-Fe-Ga[6],Co-Ni-Ga(Al)[7],Ni-Mn-In(Sn,Sb)[8]和Fe-Mn-Ga[9]等系列具有L21结构的Heusler合......
Bulletin, 2002, 27: 91-100. [3] OTSUKA K, REN X. Physical metallurgy of Ti-Ni-based shape memory alloys [J]. Progress in Materials Science, 2005, 50: 511-678. [4] HE Zhi-rong, WANG Fang, WANG Yong-shan...] UCHIL J, GANESH KUMARA K, MAHESH K K. Effect of heat treatment temperature and thermal cycling on phase transformations in Ni-Ti-Cr alloy [J]. Journal of Alloys and Compounds, 2001, 325: 210-214. [9......
in the solution-aged alloys. Key words: Ti-Ni-Cr alloy; mechanical properties; martensite transformation; internal friction 1 Introduction Shape memory alloys (SMAs) that undergo a thermoelastic... on the mechanical and phase transformation properties of Ni-Ti-X ternary alloy systems. It has been observed that the addition of Fe or Nb to Ni-Ti alloys improves their super-elastic property by lowing......
classified as AB5-type alloys, AB2-type alloys, AB-type alloys, AB3-type alloys, A2B7-type alloys, Mg-based alloys and V-based solid solution alloys [8-14]. LaNi5- based, La-Mg-Ni-based and Zr-Ti-V-based... and then heat-treated at 683 K. The structure and electrochemical performance of non-equilibrium Ti2-xMgxNi alloys were investigated. 2 Experimental Powders of Ti (99.9% purity, ~75 μm), Ni (99.99% purity......
according to processing map. However, all the above investigations are concerned with the near-equiatomic NiTi SMAs, which are either Ni-rich NiTi alloys or Ti-rich NiTi alloys. So far, few...]. Transactions of Nonferrous Metals Society of China, 2013, 23(1): 140-147. [5] KIM K S, JEE K K, KIM W C, JANG W Y, HAN S H. Effect of heat treatment temperature on oxidation behavior in Ni-Ti alloy [J......
annealed at 500 ℃ for 20 min 由于NiTi合金只有当Ni和Ti的摩尔比相近时,才能发生可逆马氏体相变,并展现功能特性,图1(b)中DSC曲线上的可逆马氏体相变峰进一步说明样品中的NiTi相正是近等摩尔比的NiTi记忆合金.因此,实验制备的60Nb-25Ti-15Ni样品是一种原位自生的NbTi-NiTi 记忆合金复合材料,且复合界面为冶金结合,界面结合牢固,NbTi能够对NiTi...状记忆效应[J]. 中国材料进展, 2012, 31(12): 40-47. CAI Wei, MENG Xiang-long, ZHAO Xin-qing, CUI Li-shan, XU Hui-bin. Martensitic transformation and shape memory effect of Ti-Ni based high temperature shape memory......
promising candidates for biomedical, control engineering and aerospace applications in recent years [1-5]. It is well known that adding a third element to replace Ni and/or Ti has a substantial effect... that of Ni50Ti50 SMA. CHOI et al [15] investigated the stability of the B2-type structure in a series of Ti-(50-x)Ni-xFe (2≤x≤20) alloys and found that Fe element has the ability to stabilize B2......
recovery strain in Ti-Ni-based shape memory alloys [J]. J Alloys Compd, 2013, 577: 255-258. [7] JIANG Shu-yong, TANG Ming, ZHAO Ya-nan, HU Li, ZHANG Yan-qiu, LIANG Lu-long. Crystallization of amorphous... B, PILCH J, SITTNER P, SCHRYVERS D. Microstructure changes during non-conventional heat treatment of thin Ni-Ti wires by pulsed electric current studied by transmission electron microscopy [J]. Acta......
