中国科技论文在线

上传时间

2005年04月18日

【期刊论文】Effect of proton and Ne irradiation on the microstructure of Zircaloy 4

祖小涛， X. T. ZU†‡*， K. SUN†， M. ATZMON†§， L. M. WANG†， L. P. YOU†， F. R. WAN†， J. T. BUSBY†， G. S. WAS†§， and R. B. ADAMSON¶

Philosophical Magazine, Vol. 85, Nos. 4–7, 01 February–01 March 2005, 649–659，-0001，（）：

-1年11月30日

摘要

Proton irradiation at temperatures of 310 and 350℃ has been explored as a method of studying radiation effects in Zircaloy 4 under power-reactor conditions. The dislocation-loop and hardness evolution are similar to those observed under neutron irradiation. Amorphization and Fe loss at Zr(Cr,Fe)2 precipitates are observed. Energy-filtered images indicate Fe accumulation in the matrix near the precipitate, a phenomenon not reported in neutron-irradiated alloys.

60浏览
0点赞
0收藏
0分享
149下载
0

引用

上传时间

2005年04月18日

【期刊论文】Effects of proton irradiation on transformation behavior of TiNi shape memory alloy thin films

祖小涛

，-0001，（）：

-1年11月30日

摘要

54浏览
0点赞
0收藏
0分享
137下载
0

引用

上传时间

2005年04月18日

【期刊论文】Two-way shape memory effect of TiNi alloy coil extension springs

祖小涛， Z.G. Wanga， X.T. Zua， b， *， P. Fuc， J.Y. Daic， S. Zhud， L.M. Wangd

Materials and Engineering A360(2003)126～131，-0001，（）：

-1年11月30日

摘要

A two-way shape memory effect (TWSME) spring that could elongate upon heating and contract upon cooling was obtained by constrained annealing and thermo-mechanical training. The effect of heat treatment and thermomechanical training on the TWSME and the effect of training on the transformation temperatures had been studied by elongation-temperature, electrical resistance measurements and differential scanning calorimetry (DSC). The TWSME recovery rate of extension spring increases with increasing the training cycles and increases to a saturation value. The inverse martensitic and martensitic temperatures decreased with increasing thermo-mechanical training cycles.

TiNi shape memory alloy， Two-way shape memory effect， Martensite transformation， Thermo-mechanical training

22浏览
0点赞
0收藏
0分享
132下载
0

引用

上传时间

2005年04月18日

【期刊论文】Hydrogen embrittlement of a TiAAlAZr alloy evaluated by impact test method

祖小涛， Y.Z. Liua， b， *， X.T. Zua， C. Lib， S.Y. Qiub， W.J. Lib， X.Q. Huangb

Scripta Materialia 52(2005)821～825，-0001，（）：

-1年11月30日

摘要

The characteristics of hydriding and hydrogen embrittlement of a TiAAlAZr alloy were evaluated by the impact test method. The results indicated that the hydrides in TiAAlAZr alloy formed as platelets and were identified as face-centered cubic d-hydride. At room temperature, the specimen showed great sensitivity to embrittlement in ductility by hydrogen. The hydrides formed promoted the crack propagation in the presence of stress, leading to the cleavage failure mode. The impact toughness decreased dramatically with increasing hydrogen concentrations, indicated that the critical hydrogen concentration required to embrittle the alloy might be lower than 300ppm.

TiAAlAZr alloy， Hydriding， Hydrogen embrittlement， SEM

30浏览
0点赞
0收藏
0分享
120下载
0

引用

上传时间

2005年04月18日

【期刊论文】Surface characterization of a Ti-2Al-2.5Zr alloy by nitrogenion implantation

祖小涛， X.T. Zu *， Z.G. Wang， X.D. Feng， C.F. Zhangb， S. Zhuc， Q. Yuc

Journal of Alloys and Compounds 351(2003)114～118，-0001，（）：

-1年11月30日

摘要

The structural mechanisms of the hardening of a Ti-2Al-2.5Zr alloy by 75 keV nitrogen ion implantation with doses of 3310 and 17 2 8310 N/cm is investigated. The surface characterization of samples was studied by XPS, XRD and Vickers hardness tests. The results of XPS and XRD analysis show that TiN is formed in the surface region. Nitrogen implantation increases the surface hardness up to 340 17 17 2 and 260% for doses of 8310 and 3310N/cm, respectively, due to formation of TiN and irradiation-enhanced hardening.

Ion implantation， Nitrogen， Ti-2Al-2.， 5Z ralloy， Photoelectron spectroscopy， X-ray diffraction， Hardness

24浏览
0点赞
0收藏
0分享
105下载
0

引用