Jun ZHANG
材料科学技术（英文）
An ideal method has been established for calculating the precipitation ofα2 ordered phase in near-α titanium alloys based on the theory on the critical electron concentration for the precipitation of α2 ordered phase in near-α titanium alloys. With complete precipitation of α2 phase in near-α titani...
关键词:
Ordered α2 phase
,
2
,
phase
,
precipitation
,
electron
Jun ZHANG
,
Qingjiang WANG
,
Yuyin LIU
,
Li LI
,
Dong LI
材料科学技术（英文）
The characteristic of the precipitation and growth of α2 ordered phase during aging treatment in near αTi alloys have been investigated in terms of the influences of aging temperature, aging time and aging manner. The results exhibit that aging temperatures influence the distribution ofα2 phase pre...
关键词:
α2 ordered phase
,
null
,
null
Jun ZHANG
材料科学技术（英文）
An empirical formula for composition demixing analysis in cathodic arc ion plating using alloy target is established based on the concepts of average charged state and relative demixing parameter. The level of composition demixing effect is presented by demixing degree of one element. For binary con...
关键词:
Cathodic arc ion plating
,
arc
,
ion
,
plating
,
alloy
,
coating
,
a
Jun ZHANG
,
Dong LI
材料科学技术（英文）
A series of Ti-Al-Sn-Zr-Mo-Si-Nd alloys with various content of Al were solution treated in alpha+beta phase field and air-cooled. The precipitation of α(2) phase in cooling was investigated by transmission electron microscopic analysis. The precipitation characteristic of α(2) phase was discussed. ...
关键词:
Jun ZHANG
材料科学技术（英文）
The composition from alloy cathode target to alloy coating generally changes to some extent in multi-are ion plating. This demixing effect leads to the difficulties in the control of alloy composition of coating and in the design of composition of alloy cathode target. A new simple formula, a(n) = [...
关键词:
Jun ZHANG
,
Dong LI
材料科学技术（英文）
The precipitation characteristics of the a2 ordered phase in Ti-Al-Sn-Zr-Mo-Si-Nd alloys with various content of Al, under different aging conditions, were investigated. The distribution and size of the a2 ordered phase changed with temperature and Al content. The dislocations were the only places w...
关键词:
Ti-Al-Sn-Zr-Mo-Si-Nd alloys
,
null
,
null
Jun ZHANG
,
Qian LIU
,
Lin WANG
材料科学技术（英文）
Fine and coarse aggregates play an important role in the fracture of concrete. However, quantitative information available on the effect of the coarse aggregate size on the fracture properties of concrete is still limited. In the present paper, the effect of coarse aggregate size (single grade of 5～...
关键词:
Aggregate size
,
null
,
null
,
null
