Program of the 140th ISIJ Meeting (October 1-3, 2000)
Discussion Session Only

High Temperature Processes

What are Non-linear Phenomena in Materials?

01 Non-uniform deformation in metal microstructures and the geometrically necessary dislocations T.Ohashi ・・・ 674

02 Kinetic behaviour of diffusion induced recrystallization controlled by chemical driving force M.Kajihara ・・・ 678

03 Contradiction of chemical reaction rate equations to coupling reactions K.Nagata ・・・ 682

04 Marangoni effect of high temperature melts and non-linear phenomena K.Mukai ・・・ 683

05 Marangoni convection in Fe-system melts during solidification or remelting process K.Nakajima ・・・ 686

Recent Technology Development for the Production of Agglomerated Ore Supporting Low Slag Operation in the Blast Furnace

06 Effects of gangue and micro pore in agglomerates on reducibility and permeability in blast furnace K.Yamaguchi ・・・ 690

07 Effect of SiO2, Al2O3 and MgO on multi- component calcium ferrite formation T.Maeda ・・・ 694

08 Effects of mineral phases and slag composition on reduction behavior of sinters H.O.Nakazato ・・・ 698

09 Production of low SiO2 sinter suitable for high PCI blast furnace operation K.Ichikawa ・・・ 702

10 Evaluation of low SiO2-low MgO sinter with use of high Al2O3 iron ores Y.Hosotani ・・・ 706

11 Effect of MgO source on the packed bed structural change of quasi-particles T.Otomo ・・・ 710

12 Discussions on the melt-formation considering particle size distribution of iron ores E.Kasai ・・・ 714

13 Technical subjects for manufacturing low slag sinter M.Matsumura ・・・ 718

14 Problems and countermeasures for the production of sintered ore with low slag volume K.Nakashima ・・・ 722

15 Development of pelletizing technology for reducing slag ratio S.Sasahara ・・・ 726

Structural Control of Steels and their Properties Starting from Solidification

16 Metallurgical problems of grain rafinement in steels T.Maki ・・・ 730

17 Control of steel properties in the total process starting from steelmaking H.Yada ・・・ 734

18 Current and future for solidification microstructures formation and their control T.Umeda ・・・ 738

19 Peritectic transformation and formation of γ grain M.Kudoh ・・・ 742

20 Effects of microsegregation and solidification mode on weldability of stainless steels K.Nishimoto ・・・ 746

21 Necessity of control of solidified secondary microstructure in strand cast slab C.Ouchi ・・・ 750

22 Grain growth control by non-metallic inclusions H.Suito ・・・ 752

23 Microstructural control of steels by intragranular ferrite formed at non-metallic inclusions H.Tamehiro ・・・ 756

24 Numerical analysis for prediction of microstructure in hot forging T.Ishikawa ・・・ 760

25 Influence of sectional shape of molds for continuous casting on distortion in heat treated automobile transmission parts T.Kimura ・・・ 764

26 Effects of physico-metallurgical factors on surface hot shortness due to Cu in steel K.Shibata ・・・ 768

Program of the 140th ISIJ Meeting (October 1-3,2000)
Current Advance in Materials and Process, Vol.13 ,No.5

Instrumentation, Control and System Engineering

Advanced Control Techniques for Future Steel Industry

27 Review of IQC-based stability theory H.Fujioka ・・・ 1010

28 Tension control for cold rolling process based on I..L.Q.design method Y.Kadoya ・・・ 1014

29 Sliding mode control theory and process control for steelmaking K.Nonami ・・・ 1018

30 Discrete time predictor and sliding mode control of hot strip mill H.Mizuno ・・・ 1022

31 Multiple model and switching control M.Fujita ・・・ 1026

32 Applicability and perspective of simple adaptive control approaches A.Sano ・・・ 1030

33 Development of CC mold level control system by simple adaptive control K.Orita ・・・ 1034

Program of the 140th ISIJ Meeting (October 1-3,2000)
Current Advance in Materials and Process, Vol.13 ,No.6

Microstructure and Properties of Materials

High-Temperature Oxidation of Steels with a Particular Emphasis on Nature of Scales

34 Effects of C and P on surface hot shortness due to Cu in steel H.Uchino ・・・ 1076

35 Suppression of surface shot-shortness induced by Cu and/or Sn K.Kunishige ・・・ 1080

36 Observation of 3-dimensional morphology of the subscale formed in Fe-Ni based alloys oxidized at high temperature K.Kusabiraki ・・・ 1084

37 Effects of chemical composition and oxidation temperature on the adhesion of scale during hot-rolling of steel T.Kizu ・・・ 1088

38 The effects of Ni,Cu,Sn,S and P in steel on grain boundary oxidation and scale/steel interface morphology Y.Takada ・・・ 1092

39 Influence of Si content on the high-temperature oxidation behaviour of low carbon steels S.Taniguchi ・・・ 1096

40 Deformation behavior of α- Fe2O3 ,γ- Fe3O4 and FeO scale at high-temperatures Y.Hidaka ・・・ 1099

41 High temperature oxidation of Fe-19Cr-0.2Ti stainless steel at 1173-1373 K I.Saeki ・・・ 1103

42 The effect of water vapour on the high temperature oxidation of low carbon steels Y.Kondo ・・・ 1104

43 Role of H2O vapor in high-temperature oxidation of stainless steels A.Yamauchi ・・・ 1108

44 Steam oxidation behaviour of Pd containing ferritic steels T.Itagaki ・・・ 1111

45 Steam oxidation behaviour of Mod.9Cr1Mo and W-Mo balanced 9Cr ferritic steels H.Kutsumi ・・・ 1114

Effective Use of Microalloyed Boron in Heat Resistant Steels

46 Proposal of research subjects on function of boron in 12%Cr ferritic heat resisting steel K.Shibata ・・・ 1116

47 Detectability of small amount of B in heat resisting steels by TEM/EELS K.Yamada ・・・ 1120

48 Creep curves of high-Cr ferritic steels containing B and characterization of B by FE-AES T.Horiuchi ・・・ 1124

49 Creep strengthening mechanism of boron containing 9-12%chromium heat resistant steel T.Muraki ・・・ 1128

50 Effect of B on the stability of microstructure in 2.25Cr-W-V-Nb steels at elevated temperatures K.Miyata ・・・ 1132

Metallurgy of Ultrafine Grain Steel

51Ultra-refinement of ferrite grains in high quench-hardenability steels by reheating in austenite region Y.Adachi ・・・ 1134

52 Refinning of ferrite grain by using of transformation or recrystallization induced by heavy deformation M.Fujioka ・・・ 1136

53 Microstructural design through multi-direction deformation T.Inoue ・・・ 1140

54 Strain induced dynamic transformation of austenite to fine ferrite and it's characteristics W.Y.Choo ・・・ 1144

55 Grain refinement of magnetically aligned two-phase steels K.Maruta ・・・ 1148

56 Reversion behavior in ultra fine-grained steels with oxide which is decomposed by mechanical milling H.Hidaka ・・・ 1152

57 Formation of nanocryatalline ferrite by rolling and ball milling in steels M.Umemoto ・・・ 1156

Program of the 140th ISIJ Meeting (October 1-3,2000)
Current Advance in Materials and Process, Vol.13 ,No.6

Process Evaluation and Material Characterization

Novel Physical Analysis Methods under Extreme Conditions

58 Soft X-ray absorption spectrometry J.Kawai ・・・ 1396

59 Ultra trace analysis with brilliant synchrotron X-ray sources at Spring- 8 K.Sakurai ・・・ 1400

60 Laser ablation assisted r..f.- powered helium glow discharge optical emission spectrometry and laser ablation optical emission spectrometry H.Matsuta ・・・ 1404

61 Chemical state imaging of aluminium oxides by EPMA-EXEFS T.Watanabe ・・・ 1405

62 Depth profiling for chemical states using EPMA S.Hashimoto ・・・ 1409

63 Characterization of oxide layers and interface of SUS430 stainless steel by ⁵⁷Fe CEMS K.Nomura ・・・ 1413

64 High-performance mossbauer spectroscopy A.L.Kholmetskii ・・・ 1417

65 Mossbauer investigations of AISI M2 steel after different kinds of ion implantation A.L.Kholmetskii ・・・ 1421

66 Rapid analysis of coals by near infrared spectroscopy M.Kaihara ・・・ 1425

67 In-situ characterization of the oxide layers on the steels by Raman spectroscopy K.Kitamura ・・・ 1429

68 Microscopic structures of rust formed on weathering steel M.Kimura ・・・ 1433

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