材料期刊网

INVESTIGATION ON LATER STAGE OF INTERMEDIATE TRANSFORMATION IN Fe-C-Mo ALLOYS

XU Qikun WANG Dongya Chongqing University , Chongqing , China XU Qikun , Dept.of Metallurgy and Materials Engineering , Chongqing University , Chongqing , Sichuan , China

金属学报(英文版)

The transformation process and the products of long term isothermal transformation around the kinetic B_s temperature(the bay temperature in TTT diagram)in Fe-C-Mo alloys have been investigated.It was found that,at the final stage of intermediate transformation,a kind of granular structure formed accompanying the growth of bainitic ferrite.In comparison with the carbide Mo_2C in the bainitic ferrite plates or blocks,the carbide m granular eutectoid has been determined to be cementite containing a tiny bit of molvbdenum,(Fe,Mo)_3C.

关键词: allot Fe-C-Mo , null , null , null

CORRELATION OF ION-CLUSTER STRUCTURE WITH BULK VISCOSITY AND DENSITY OF TiO_2-BEARING MOLTEN SLAG

DIAO Risheng WANG Xiqing WANG Huaiyong ZHANG Rong Iron and Steel Research Institute , Panzhihua Iron and Steel Company , Sichuan , ChinaDU Hegui Northeast University of Technology , Shenyang , China

金属学报(英文版)

An approach was made to correlate the proposed model of ion-cluster structure and structural parameter of TiO_2-bearing pentan system of molten slag with properties.Re- sults showed that an increase of ions with 4-coordination number in molten slag makes the increase of bulk viscosity and the decrease of density,while ions with 6-coordination number are the contrary.The structural parameter proposed is so fairly interrelated to the properties of slag,that it may be available for the prediction about properties.In comparison with ions of 4-coordination number.Ti is more effective than Al and Si.

关键词: TiO_2 , null , null , null , null

TEM STUDY OF BONDING LAYERS IN DISSIMILAR ALLOY EXPLOSIVE BONDING JOINTS

ZHOU Bangxin SHENG Zhongqi PENG Feng Southwest Center for Nuclear Reactor Engineering Research and Design , Chengdu , China P.O.Box 291-601 , Chengdu , Sichuan , China

金属学报(英文版)

The bonding layers in dissimilar alloy explosive bonding joints,γ/α stainless steels, copper/carbon steel and brass/γ-stainless steel have been studied by means of TEM tech- nique.The results show that the bonding is obtained by diffusion and local melting at the con- tact surface.The structure of bonding layer not only responds to the compositions of the bond- ing alloys,but also the difference between their thermal conductivities,melting points and recrystallization temperatures,Because of the small molten region and fast cooling rate,the structure of molten region could be amorphous or microcrystals,and both stable and metastable phases exsist.

关键词: explosive bonding , null , null

Department of Metallurgy and Materials Engineering of Chongqing University

YAN Guangting Chongqing University , Sichuan , China.

材料科学技术（英）

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