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| 1 | STUDY OF TCP PHASE PRECIPITATING IN GH4199 SUPERALLOY显示文摘The precipitating regulation and mechanism of TCP phase (μ phase and σ phase) are studied, using electron hole number (EHN) theory, phase analysis technology and TEM observation. The results indicate that the EHN in studied alloy is 2.311-2.348 which is higher than that of critical EHN of μ phase precipitate (2.30), so μ phase could precipitate if there is enough thermo-exposition. In contrast, the calculated EHN is less than that of critical EHN of σ phase precipitate (2.52). However the σ phase is also observed by TEM. Enrich of Cr and Mo around γ phase after γ′phase precipitated leads to σ phase precipitated. | T.Cui Y.S.Zhang S.W.Guo L.Wang H.C.Yang | 2004 | Acta Metallurgica Sinica(English Letters)2004，17，5： | 3 |
| 2 | On the stability of uncertain systems with multiple time—varying delays显示文摘 | Y.J.Sun J.G.Hsieh H.C.Yang | | 0，，01： | 1 |
| 3 | Compact printed ultra-wideband antennas with band-notched characteristics显示文摘 | L.Y.Cai G.Zeng H.C.Yang X.W.Zhan | | 0，，： | 1 |
| 4 | Compact wideband antenna with double-fed structure having band-notched characteristics显示文摘 | L.Y.Cai Y.Li G.Zeng H.C.Yang | | 0，，： | 1 |
| 5 | TENSILE CREEP DEFORMATION AND DAMAGE BEHAVIOR IN A NICKEL-BASE SUPERALLOY AT 900℃显示文摘The tensile creep deformation and damage evolution in a Ni-base superalloy at 900℃/170MPa were investigated. At the first creep stage, abnormal creep occured due to the resolution of fine particles, and the deformation initiated from grain boundary areas. It is evident that nearly all of the dislocations were in γ matrix channels in form of dislocation pairs and the dislocations were impeded at γ/γ′ interfaces, thus the dislocation networks developed deformation. At the steady creep stage, impeded dislocations at γ /γ′ interfaces climbed over γ′ phases by diffusion-dominant mechanism.At the last creep stage, voids were formed around carbides at grain boundary which leaded to accumulated damage and caused creep rate accelerated. With the dislocation networks being broken, the voids connected and grew into micro-cracks gradually.Finally the cracks propagated along grain boundary area and resulted in failure. | H.C.Yu S.S.Xie H.C.Yang | 2004 | Acta Metallurgica Sinica(English Letters)2004，17，4： | 1 |
| 6 | 估算蒸汽压力的简易方法显示文摘近700种主要有机化合物的蒸汽压力与温度的Antoine系数。 表1中列出了近700种有机化合物的蒸汽压力与温度的函数关系,并给出了数据适用的温度范围,以T_(最小)小及T_(最大)表示最小及最大温度。 | C.L.Yaws H.C.Yang 李光辉 | 1990 | 聚氯乙烯1990，，5： | 0 |
| 7 | INVESTIGATION OF THE LOW-CYCLE FATIGUE AND FATIGUE CRACK GROWTH BEHAVIORS OF P91 BASE METAL AND WELD JOINTS显示文摘Low cycle fatigue tests and crack growth propagations tests on P91 pipe base metal and its weld joints were conducted at three different temperatures: room temperature,550℃ and 575℃. The strain-life was analyzed, and the changes in fatigue life behavior and fatigue growth rates with increasing temperature were discussed. The different properties of the base metal and its weld joint have been analyzed. | H.C.Yang Y.Tu M.M.Yu J.Zhao | 2004 | Acta Metallurgica Sinica(English Letters)2004，17，4： | 0 |
| 8 | 700种主要有机化合物的蒸汽压数据显示文摘本文给出了大约700个主要有机化合物的蒸汽压关联式及关联式系数。蒸汽压是温度的函数。同时表中也列出了其所适用温度范围的最高和最低温度。 | C.L.Yaws H.C.Yang 史新辉 | 1990 | 化工厂设计1990，10，4： | 0 |
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