lab_report_2_son2 - M.E.T.U. DEPARTMENT OF METALLURGICAL...

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M.E.T.U. DEPARTMENT OF METALLURGICAL & MATERIALS ENGINEERING METE 206 PROPERTY CONTROL BY HEAT TREATMENT (EXP 2) Erdem MERMER 1447929 GROUP 10
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OBJECTIVE: To apply different cooling rates to various type of steels and determine the effect of cooling rates and steel composition on final hardness values. APPARATUS: Muffle Furnace A Hardness Indenter. A water tank. A oil tank SAMPLE: AISI 1060 steel bar ( The chemical composition : 0.6 % C ) AISI 1020 steel bar ( The chemical composition : 0.2 % C ) AISI H13 high alloy steel bar ( The chem. comp.: 0,35 % C , 5% Cr, 1% V, 1,5% Mo ) 1-) The chemical composition of AISI H13 Tool steel is 0.35 wt % Carbon, 5.00 wt % Chromium, 1.00 wt %Vanadium and 1.50 wt % Molybdenum. 2-) 1 2 3 4 5 Average (Vickers) Furnace cooled AISI 1020 116 123 135 125 117 123.2 Furnace cooled AISI 1060 243 238 254 238 238 242.2 Air cooled AISI 1060 310 310 302 279 286 297.4 Oil quenched AISI 1060 528 471 865 471 434 553.8 Water quenched AISI 1060 674 940 865 613 900 798.4 Air cooled H13 336 392 434 336 446 388.8 3-) Temp(C ° ) A A F + C + Furnace Cooled F + C Air Cooled M start M Oil Quenched Water Quenched
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800 700 600 500 400 300 200 100 1 10 10 2 10 3 10 4 10 5 Time(s) - Due to equilibrium conditions satisfied annealed (furnace cooled) specimen has proeutectoid
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lab_report_2_son2 - M.E.T.U. DEPARTMENT OF METALLURGICAL...

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