The effect of some heat treatments on the properties of medium carbon steel
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Abstract
The present study is aimed to compare between the effect of the modified isothermal annealing with conventional full annealing and normalizing on the properties of medium carbon steel by full annealing and normalizing tensile test and otherdisclike shape specimens by heating them at (860Ċ) for (15min); followed by slowly cooling inside furnace for the former treatment and by air cooling for the later to room temperature. The modified isothermal annealing was conducted by heating eight group of specimen (each groups includes a tensile and adisclike shape specimen ) respectively at (860Ċ) for (15min) ,then slowly cooled inside furnace to different temperatures(760,700,600,560,460,380,340,and 260) Ċ then each group issoaked at one of those temperatures for an (1hr), then air cooled to room temperature .Larger (σT) which exceed (800 Mpa) and(VHN) values of the treated specimens at (760Ċ) were obtainedwhen compared with those obtained by normalizing. While an increase was took place in value of the treated specimens ∈%at (260Ċ) over its value when full annealed , hence the formability was improved by treating at. (260Ċ) isothermallywith a reduction in consumed electric energy because of the shorter thermal cycle. Also the toughness was considered by evaluating the restricted areas under stress – strain curves. Finally the resulted variations in microstructures were observed by optical microscope.
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References
V.Raghavan”,Materials Science and Engineering”, Prentice- Hall of India Private Limited, New Dalhi (1982), P-154, 196-197,254-255,366
Alan Everett”,Materials”,BT Batsford Limited,London,(1978), P.200
احمد سالم الصباع ” الميتالوجيا الفيزياوية (الفلزات)” عالم الكتب, الطبعة الثالثة, القاهرة (1979)
Henrik Alberg , Material Modeling for simulation of heat treatment , Lulead University of Technology, ( 2003 ), p. 3, 15
M. Andre Meyers et al”,Mechanical Behavior of Materials”, Prentice-Hall(USA),(1999),P.114-115
W. Bolten”,Engineering Materials Technology”, Butter Worths third edition,(1998),P.194-195
I. Madariaga etal, Metallurgical and Material Transaction , Vol.29A, MARCH (1998), P.1003 DOI: https://doi.org/10.1007/s11661-998-1009-x
الخبير ف. بالاكريشنان و أخرون “دليل المعاملات الحرارية للسبائك الحديدية” وزارة الصناعة الثقيلة, المعهد المتخصص للصناعات الهندسية, بغداد 1986
د.عارف ابو صفية ” الميتالوجيا الفيزياوية الهندسية” مركز التعريب, الجامعة التكنلوجية, بغداد 1982
M.T Shehata etal, Session 53, International Symposium,” Microstructural Characterization of Experimental High Dual- Phase and Bainite steels”,Wednesday,August,27,2003,P.M.
James M.D. Brien etal, Metallurgical and Metals Transactions A,vol.33 A,APRIL(2002), P.1255 DOI: https://doi.org/10.1007/s11661-002-0226-y
Japanese Standards Association , JIS Hand book , (1978) , P.71
دائرة تصميم المنتجات “دليل توحيد مواصفات الفولاذ في الصناعات الهندسية” المعهد المتخصص للصناعات الهندسية, بغداد 1988
Davis , Mike Meier , Department of chemical engineering ad Metal science , University of California , ( 2004 ). P 1-2
Sukh Dev Sehgal etal, ”Materials-Their Nature Properties and Fabrication”, S. Chand & Co.(Pvt.)LTD.Ram Nagar New Delhl, 2nd Edition ,(1975). P.65
R. S. Khurmi etal, ”Material Science,“ S. Chand & Co. (Pvt), New Dalhi, (1987).P.145,158,188,(224-225)
ف. بيلي, ترجمة د.حسين باقر رحمةالله “مبادئ هندسة المعادن والمواد” مطابع جامعة الموصل, العراق 1985
A. Samoilov etal, Session32,International Symposium”,Modelling of Pearlite Reaction in Plain Carbon Steels“ Tuesday, August, 26-2003. P.M.
Yamamoto ScientificTool Laboratory CO., LTD., Standard Microstructure Summary, Group. 3, P 5.
Karal.Erik.Thelmng”,Steel and Its Heat Treatment, Printed in England Gartwgman Ltd.,(1975).P.13,50. [21] R.S.Khurmietal”,WorkshopTechnology”,Vol.1,Ramnmn Agar, New Delhi,(1987),P.21