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END GRAIN ATTACK OF LD10CS PLATES DURING CHEMICAL MILLING

ZENG Xianghua , SHA Jiande , SU Ge Institute of Metal Research , Academia Sinica , Shenyang , ChinaYUAN Jigang LIU Fumei ZHONG Huiwen Southwest Aluminium Mill , China National Nonferrous Metals Industry Corporation , Chongqing , China SHA Jiande , Engineer , Institute of Metal Research , Academia Sinica , Shenyang , China

金属学报(英文版)

The end grain attack of LDIOCS aluminium alloy plates during chemical milling in hot aqueous solution of sodium hydroxide has been studied.The results show that the microsegregation of some components,i.e.Cu,Si etc.,is the main reason of the end grain at- tack,and it is affected by the conditions of...

关键词: aluminium alloy , null , null , null

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 ac...

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

EFFECT OF TRACE B AND Ga ON TRANSFORMATION CONTROL OF Mn-Si-Cr AS-ROLLED DUAL PHASE STEELS

HE Zefu LIU Tianmo WU Yunjian chongqing University , Chongqing , China [Originally published in ACTA METALL SIN(CHINESE EDN)25(3)1989 pp A229—A231. Department of Metallurgy and Materials Engineering , Chongqing University , Chongqing , China

金属学报(英文版)

Trace of B and Ga can substitute for Mo in Mn-Si-Cr dual phase steels.The technological process and CCT curves of steels treated with B and Ga are similar to those for Mn-Si-Cr-Mo steel....

关键词: as-rolled dual phase steel , null , null , null

THERMODYNAMICS OF V REDUCTION IN SMELTING REDUCTION SLAG FOR V-Ti-CONTAINING MAGNETITE

ZHANG Binhuai LIU Qingcai LI Changwei ZOU Deyu SUN Jinbiao Chongqing University , Chongqing , China professor , Department of Metallurgy and Materials Engineering , Chongqing University , Chongqing 630044 , China

金属学报(英文版)

For slag system of CaO-SiO_2-Al_2O_3-MgO-V_2O_5,the time of V reduction to appro ch the dynamical equilibrium is about 6 h,the equilibrium time is not evidently influenced by the ratio CaO/SiO_2 and shortens with the increase of temperature.It the ratio of the weight of slag to that of iron bath is ...

关键词: magnetite , null , null , null

GROWTH MODE AND MODIFICATION OF GRAPHITE IN CAST IRON MELT

LIU Yongkun Southwestern Institute of Technology and Engineering , Chongqing , ChinaYANG Shihao Shandong Polytechnical University , Jinan , China

金属学报(英文版)

Using liquid quenching technique,the change of growth mode of graphite in cast iron melt was analysed.Based on the interface structure theory of crystal growth,the concept of multiplication of spiral growth steps was advanced and two basic multiplication models were given.It was proposed that multip...

关键词: graphite , null , null , null , null

STUDY OF SMELTING REDUCTION RATE FOR VANADIUM TITANIUM MAGNETITE

ZHANG Binghuai ZOU Deyu JIN Kehe LIU Qingcai Chongqing University , Chongqing , China

金属学报(英文版)

A comparative study was made of the reduction kinetics for high temperature smelting of vadium-titanium-containing magnetite,together with Hainan iron ore,using iron bath method.Three peaks were revealed on the reduction rate curves for the magnetite,while one peak only for Hainan ore.Under the same...

关键词: vanadium-titanium-containing magnetite , null , null , null

ELECTRON MICROSCOPE STUDY ON δ-EUTECTOID IN HIGH SPEED STEEL

SHI Gongqi DING Peidao ZHO U Shouze Chongqing University , Chongqing , China

金属学报(英文版)

The morphology and structure of δ-eutectoid and the transformation of δ-eutectoidic austenite in high speed steel have been studied under SEM and TEM.The δ-eutectoid in as-cast high speed steel is rod-shaped eutectoidic units with different orientations and is markedly surrounded by carbide shell.Th...

关键词: high speed steel , null , null

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