收藏本站
收藏 | 投稿 | 手机打开
二维码
手机客户端打开本文

Formation mechanism of hydride precipitation in commercially pure titanium

Jingwei Li  Xiaocui Li  Manling Sui  
【摘要】:Since titanium has high affinity for hydrogen and reacts reversibly with hydrogen,the precipitation of titanium hydrides in titanium and its alloys cannot be ignored.Two most common hydride precipitates in α-Ti matrix are γ-hydride and δ-hydride,however their mechanisms for precipitation are still unclear.In the present study,we find that both γ-hydride and δ-hydride phases with different specific orientations were randomly precipitated in the as-received hot forged commercially pure Ti.In addition,a large amount of the titanium hydrides can be introduced into Ti matrix with selective precipitation by using electrochemical treatment.Cs-corrected scanning transmission electron microscopy is used to study the precipitation mechanisms of the two hydrides.It is revealed that the γ-hydride and δ-hydride precipitations are both formed through slip + shuffle mechanisms involving a unit of two layers of titanium atoms,but the difference is that the γ-hydride is formed by prismatic slip corresponding to hydrogen occupying the octahedral sites of α-Ti,while the δ-hydride is formed by basal slip corresponding to hydrogen occupying the tetrahedral sites of α-Ti.

知网文化
【相似文献】
中国期刊全文数据库 前19条
1 张健;周惦武;刘金水;;First-principles investigation of Mg_2CoH_5 complex hydride[J];Transactions of Nonferrous Metals Society of China;2009年01期
2 庄鹏辉;刘晓鹏;李志念;王树茂;蒋利军;李华玲;;Hydrogen sorption properties of Ti-Zr hydride doped NaAlH_4[J];Transactions of Nonferrous Metals Society of China;2007年S1期
3 孙现众;潘洪革;高明霞;李锐;林燕;马帅;;Cycling stability of La-Mg-Ni-Co type hydride electrode with Al[J];Transactions of Nonferrous Metals Society of China;2006年01期
4 杨柯;杜屏;吕曼祺;;Metal hydride air conditioner[J];广东有色金属学报;2005年Z1期
5 ;Characteristics of multi-component Ml-based hydrogen storage alloys and their hydride electrodes[J];Rare Metals;2002年01期
6 文明芬 ,翟玉春 ,王新海 ,陈廉;Properties of Zr-Ti-V-Mn-Ni hydride alloy[J];Transactions of Nonferrous Metals Society of China;2002年05期
7 ;CHARACTERISTICS OF METAL-HYDROGEN INTERACTION IN HYDROGEN STORAGE ALLOYS[J];Acta Metallurgica Sinica(English Letters);2000年02期
8 王倩楠;晁栋梁;周万海;陈云贵;吴朝玲;;Influence factors of capacity loss after short-time standing of metal-hydride electrode and its EIS model[J];Journal of Rare Earths;2013年08期
9 ;Laves phase hydrogen storage alloys for super-high-pressure metal hydride hydrogen compressors[J];Rare Metals;2011年03期
10 ;HYDROGEN STORAGE PROPERTIES OF Mg MODIFIED WITH TETRAHYDROFURAN[J];Acta Metallurgica Sinica(English Edition);1990年06期
11 文明芬,陈廉,于波,佟敏,陈德民,田彦文,翟玉春;Surface modification for La_(1-x)Ce_x (NiCoMnAl)_5 hydride electrode by hot charging in potassium borohydride solution[J];Transactions of Nonferrous Metals Society of China;2000年05期
12 Jian Chen;Jian-Qiu Wang;En-Hou Han;Wei Ke;D.W.Shoesmith;;Effect of Hydrogen on Corrosion and Stress Corrosion Cracking of AZ91 Alloy in Aqueous Solutions[J];Acta Metallurgica Sinica(English Letters);2016年01期
13 李松林;汤盛龙;刘燚;彭书科;崔建民;;Synthesis of nanostructured Mg_2FeH_6 hydride and hydrogen sorption properties of complex[J];Transactions of Nonferrous Metals Society of China;2010年12期
14 孙现众;潘洪革;高明霞;李锐;林燕;马帅;;Cycling stability of La-Mg-Ni-Co type hydride electrode with Al[J];Transactions of Nonferrous Metals Society of China;2006年S2期
15 ;Hydrogen storage properties of non stoichiometric AB_2-type metal hydride[J];Transactions of Nonferrous Metals Society of China;2000年03期
16 陈伟东;王建伟;王力军;卢世刚;;Hydrogen desorption behaviors of zirconium hydride in oxygen containing atmosphere[J];Transactions of Nonferrous Metals Society of China;2007年S1期
17 Donghui Yang;Jianqing Chen;Hui Wang;Jinghua Jiang;Aibin Ma;Z.P.Lu;;Effect of Decomposition Kinetics of Titanium Hydride on the Al Alloy Melt Foaming Process[J];Journal of Materials Science & Technology;2015年04期
18 ;Thermal decomposition kinetics of titanium hydride and Al alloy melt foaming process[J];Science in China(Series B);2004年06期
19 张文魁,甘永平,杨晓光,黄辉,余厉阳;Crystal structure and switchable optical properties of yttrium hydride films covered by palladium layer[J];Transactions of Nonferrous Metals Society of China;2003年06期
中国重要会议论文全文数据库 前10条
1 ;Study on high-pressure metal hydride hydrogen compressors[A];2008 International Hydrogen Forum Programme and Abstract[C];2008年
2 ;MULTI-SCALE MODEL IN THE ANALYSIS OF HYDROGEN INDUCED EMBRITTLEMENT AT LARGE STRAINS[A];中国力学学会学术大会'2005论文摘要集(下)[C];2005年
3 ;Microstructure and hydrogen storage characteristics of ball-milled Mg+x wt.%LaMg_2Ni(x=0-30) composites[A];2008 International Hydrogen Forum Programme and Abstract[C];2008年
4 ;Electrochemical properties of Ti-Ni-H powders prepared by milling titanium hydride and nickel[A];2008 International Hydrogen Forum Programme and Abstract[C];2008年
5 Xiaojiang Hou;Hongchao Kou;Tiebang Zhang;Rui Hu;Jinshan Li;Xiangyi Xue;;First-principles Studies on the Structures and Properties of Ti-and Zn-substituted Mg_2Ni Hydrogen Storage Alloys and Their Hydrides[A];中国材料大会2012第1分会场:先进能源材料与技术论文集[C];2012年
6 ;Preparation and hydrogen storage property investigation of high-purity magnesium hydride[A];2008 International Hydrogen Forum Programme and Abstract[C];2008年
7 潘正良;;INTERNAL FRICTION IN Zr and Zr ALLOYS[A];第十届全国固体内耗与力学谱及其应用学术会议摘要集[C];2012年
8 ;Effect of the La/Nd ratio on the electrochemical properties of the La_(0. 70-x)Nd_xPr_(0.05)Mg_(0.25)Ni_(3.3)Al_(0.1)(x=0.05-0.20) hydrogen storage alloys[A];第十二届全国稀土元素分析化学学术报告暨研讨会论文集(上)[C];2007年
9 Zhao Junwei;Zhu Li;;Study and Comparison on the Determination Methods of Trace Bismuth in Low-alloy Steel[A];第十届中国钢铁年会暨第六届宝钢学术年会论文集III[C];2015年
10 ;Design and Test of Automatic Apparatus for Measuring Properties of Hydrogen Storage Materials[A];第二十七届中国控制会议论文集[C];2008年
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978