材料期刊网

采用改进冲击摆锤评价7075-T651合金焊缝的断裂能

R. R. AMBRIZ , D. JARAMILLO , C. GARCíA , F. F. CURIEL

中国有色金属学报(英文版) doi:10.1016/S1003-6326(16)64157-2

采用改进冲击摆锤，研究7075-T651合金焊缝夏比试样的力?时间曲线。考虑力?时间曲线和恒冲击速率，获得不同区域的断裂能。与焊缝金属(7.88 J)和基体金属(5.37 J(纵向)和7.37 J(横向))的断裂能相比，热影响区的断裂能更高(33.6 J)，这是由于焊接过程中，热力学不稳定的η′相发...

关键词: 7075-T651 焊接接头 , 改进夏比摆锤 , 力-时间曲线 , 断裂能 , 动态屈服强度

Preface to Special Issue on Photocatalysis for celebrating the 20th anniversary of Professor Jimmy C. Yu’s return to Hong Kong and leading photocatalytic research there

催化学报 doi:10.1016/S1872-2067(15)61006-3

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Wear-resisting oxide films for 900 degrees C

材料科学技术（英文）

A study was conducted to develop low-friction,wear-resistant surfaces on high temperature alloys for the temperature range from 26 degrees C to 900 degrees C. The approach investigated consists of modifying the naturally occurring oxide f...

关键词: oxidation;behavior;alloys

The oxidation behavior of TiAINb intermetallics with coatings at 800 C

Surface & Coatings Technology

The discontinuous and cyclic oxidation behavior of TiAlNb intermetallics with coatings such as NiCrAlY, TiAlCr and ultrafine enamel coatings at 800 C was studied. The results indicated that the three coatings could decrease the mass gains of TiAlNb alloys during discon...

关键词: TiAlNb intermetallics;discontinuous and cyclic oxidation;coatings;tial-based intermetallics;high-temperature air;titanium aluminides;nb;addition;ti60 alloy;resistance;corrosion

Effect Of Mo And Mo2c On Themicrostructure And Properties Of The Cermets Based On Ti(C,N)

S.Q. Zhou , W. Zhao , W.H. Xiong , Y.N. Zhou , null , null , null , null

金属学报(英文版)

Effect of Mo and Mo2C on the microstructure and properties of Ti(C,N)-based cermets was investigated in this article. The results have indicated that the weight percentage of Mo from 5 to 10 can reduce Ti(C,...

关键词: Transverse rupture strength (TRS) , null , null

Interface structure and mechanical properties of Ti(C,N)-based cermet and 17-4PH stainless steel joint brazed with nickel-base filler metal BNi-2

Journal of Materials Processing Technology

The effects of brazing temperature on microstructure and bonding strength of vacuum brazed joints of Ti(C,N)-based cermet and 17-4 PH stainless steel, using filler metal BNi-2, were investigated. At a lower brazing temperature of 1050 C. ...

关键词: Brazing;Ti(C,N)-based cermet;Steel;Microstructure;Mechanical;properties;isothermal solidification

Relationship between degeneration of M7C3 and precipitation of M23C6 in a cobalt base superalloy

Materials Science and Technology

The relationship between degeneration of the primary M7C3 carbide and precipitation of the secondary M23C6 carbide has been investigated in a cobalt base superalloy after 100 h aging at 850 degrees C. The re...

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Oxidation behavior of a single-crystal Ni-base superalloy in air at 900, 1000 and 1100 degrees C

Oxidation of Metals

The isothermal-oxidation behavior of a single-crystal (SC) Ni-base superalloy was studied over the temperature range from 900 to 1100 degrees C and analyzed by OM, TGA, XRD, EDX, SEM and EPMA. The alloy obeyed a subparabolic rate law during oxidation at 900 and 1000 de...

关键词: Ni-base single-crystal;superalloy;oxidation;microstructure;kinetics;cr-al alloys;internal nitridation;coatings

Oxidation behavior of a single-crystal Ni-base superalloy in air at 900, 1000 and 1100 degrees C

Tribology Letters

The isothermal oxidation behavior of a single-crystal (SC) Ni-base superalloy was studied over the temperature range from 900 to 1100 degrees C and analyzed by OM, TGA, XRD, EDX, SEM and EPMA. The alloy obeyed subparabolic rate law during oxidation at 900 and 1000 degr...

关键词: Ni-base single-crystal;superalloy;oxidation;microstructure;kinetics;cr-al alloys;internal nitridation;coatings

Microstructure of oxide scales formed on Ti-48Al-8Cr-2Ag alloy in air at 900-1000 degrees C

Oxidation of Metals

The oxidation of Ti-48Al-8Cr-2Ag (at.%) was studied for 50 h at 900 and 1000 degrees C. The microstructure of the oxide scales was characterized by means of scanning-electron microscopy (SEM) and high-resolution electron microscopy (HREM). The results showed that the m...

关键词: Ti-Al-Cr-Ag alloy;oxide scale;HREM;al-cr alloys;temperature oxidation behavior;tial-intermetallic-compound;resistance;alumina;chromium;oxygen;film