EXPERIMENT 2 - M.E.T.U. DEPARTMENT OF METALLURGICAL...

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Unformatted text preview: M.E.T.U. DEPARTMENT OF METALLURGICAL & MATERIALS ENGINEERING METE 206 PROPERTY CONTROL BY HEAT TREATMENT (EXPERIMENT 2) STUDENT NAME : ALI ATE STUDENT NUMBER : 1393933 GROUP NUMBER : 2 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 ) RESULT & DISCUSSION: 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-) COOLING TYPE Test 1 Test 2 AVRG AISI1020 Furnace Cooled 60 65 68 AISI1060 Furnace Cooled 18 16 17 AISI1060 Water Quenched 69 69 69 AISI1060 Oil Quenched 63 47 55 AISI1060 Air Quenched 33 27 30 H13 Air Quenched 51 47 49 3-) Temp(C ) 800 700 600 500 400 300 200 100 1 10 10 2 10 3 10 4 10 5 Time(s) Because of the micrsotructures and the cooling rates of the two specimens, their hardness values are expected to be different from each other. Fast cooling rates result in the hard materials, are expected to be different from each other....
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This note was uploaded on 12/27/2011 for the course MATH 256 taught by Professor Adad during the Spring '11 term at Middle East Technical University.

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EXPERIMENT 2 - M.E.T.U. DEPARTMENT OF METALLURGICAL...

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