-General Form of Designation. A. Carbon Content in Points or hundredths of percent AISI x x xx B. Major Alloying Elements T TT 8 9 C. Carbon Content in Points or thousandths of percent 7 10 D. American Iron and Steel Institute 7. E. Iron Content in Points or hundredths of percent 8. F. Range of Carbon 9. G. American Institute of Steel and Iron 10. H. Specific Alloy in the Group

-General Form of Designation. A. Carbon Content in Points or hundredths of percent AISI x x xx B. Major Alloying Elements T TT 8 9 C. Carbon Content in Points or thousandths of percent 7 10 D. American Iron and Steel Institute 7. E. Iron Content in Points or hundredths of percent 8. F. Range of Carbon 9. G. American Institute of Steel and Iron 10. H. Specific Alloy in the Group

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Composition lat% N 40 60 100 1600 2800 1500 1453 C 2600 Liquid 1400 Solidus line Liquidua line 2400 1300 1200 2200 1100 1085 C 2000 1000 20 40 100 Composition (wt N (NO What is the amount for each phase in 1kg of a 50% Ni-50% Cu alloy at temperatures of 1400, 1300, or 1200 degrees C for point A and point B? Temperature ('C) Temperature ("F)
In the AISI steel alloy group numbering system, alloys ASI 40 XX through the ASI 48XX are vanadium based alloy steels. True or false.
Design of a Melting Procedure for a Casting You need to produce a M=1000 kg Cu-Ni alloy having minimum yield strength of Sy = 20,000 psi, a minimum tensile strength of Sut = 60, 000 psi, and a minimum % elongation of 20%. %3D You have in your inventory a Cu-20% Ni alloy and pure 1500 1400 1300 1200 nickel. 1100 1000 Design a method for producing castings having the required properties. 80,000 80 Tensile strength Cu strengthens Ni 60,000 60 40,000 40 Ni strengthens Cu % Elongation 20.000 20 Yield strength 20 40 80 Weight percent nickel 60 Ni Strength (psi) Temperature ('C) &Elongation
Question One (Compulsory) Composition (atk Sn) 100 20 40 60 80 327C B00 300 Liquid 500 232C 400 200 183C 07.8 18.3 61.9 300 100- H200 100 BO 100 20 40 60 Pb) Compesition (wt% Sn) Figure 1: Lead -tin phase diagram Figure I above shows a lead-tin (alloy) phase diagram. Consider an alloy composition of 55 wt% Sn - 45 wt% Pb. Answer the following questions: (i) Name the phases present and their compositions in the alloy at 150°C. (ii) Describe the structural and composition changes in the alloy when it is cooled from 190°C to 20°C. (iii) What are the compositions of phases at the eutectic point and why is this point important for the alloy? (iv) Given that the average density of a phase is determined as Pa = 100 ,calculate the PA PB volume fractions of the phases at the given compositions and at 150°C. Take the densities of lead and tin as 11.34 g/cm' and 7.36 g/cm' while the mass fraction of a is 0.21. (v) Name and describe four industrial applications of lead-tin alloys. ta aroundu (3.)…
Q1:A/ Fill the blanks with suitable answer : 1-The solid phase in the Isomorphism Systems is a is a 2- The line above the mixture phase is called 3- The reaction that results from the separation of a solid phase into two phases is called 4-Phase diagrams are classified based on number of components in the system to the: 1).. . , 2)... 5- The peritectic reaction(in Iron - Carbon phase diagram) result from reacts ... With percent... and gave product. . . Solid, while in Iron - Carbon solid solubility with percent......and ..... with percent
Carbonitriding is a case-hardening process in which a steel is heated in a gaseous atmosphere of such composition that carbon and nitrogen are absorbed simultaneously. Carbonitriding is a modification of the nitriding process. True False Based upon the percent elongation of a tensile sample, a ductile engineering material is defined by a value equal to or greater than 5% and a brittle material is defined by a value less than 5%. True False
Abul Khair (AKS) steel industry produced steel sample (austenite phase) which has 1.4% C for some particular application. As an engineer, determines the following at a temperature 200°C from Figure Q 3 (a) (see attachment): (i) The fraction of total ferrite and total cementite phases. (ii) The fractions of the proeutectoid phase and pearlite. (iii) The fraction of eutectoid cementite. (iv) The tensile strength of the specimen.
Question 4 A segment of the Fe/C alloy phase diagram is shown below: Composition (at% C) 15 Temperature (°C) 0 1600 1400 1200 1000 800 600 400 1538°C 0 (Fe) 8 Y 912°C -1493 C 1394-C Y. Austenite 0.76 0.022 a, Ferrite 1 y+L 2 2.14 10 1147 C at Fe₂C L 4.30 Y+Fe3C 4 3 Composition (wt% C) 727°C 20 Cementite (Fe-C) 5 6 25 2500 2000 1500 1000 6.70 Temperature (°F) a) What are the equilibrium phases, compositions and relative fractions of the Fe-C alloy at an average composition Ccarbon of 2% and a temperature of 730 °C? b) What are the equilibrium phases, compositions and relative fractions of the Fe-C alloy at an average composition Ccarbon of 2% and a temperature of 725 °C? 7 c) Sketch the microstructure of the alloy obtained by quick cooling of the alloy from the conditions in part a) to the conditions in part b). Be sure to identify the phases in your sketch.
14. it is the property of the material to be liquefied at elevated materials 15. Malleable materials are Easy to forge Lightweight Highly ductile Easy to cast а. b. C. d. 16. The hardness of steel depends on All of the choices given| The austenite grain structure Formation of pearlite to austenite Formation of cementite a. b. С. d. 17. In stress-strain curve, what strength measures the resistance of a material to plastic deformation?
Figure 1 show Eutectoid Plain Carbon Steel Phase Diagram. Please indicate the phases present and their corresponding weight fraction at points a, b, c and d. Show your tie-line and calculations based on Lever Rules. Temperature (°C) 1100 900 700 500 300 100 0 100% Fe 7 0.02 1.0 Fe,C 1.2 2.0 7 7 7 7 Fe, C Figure 1 Fe,C Pearlite 4.0 3.0 Weight percent carbon 7+ Fe, C 727°C a + Fe₂C 5.0 Fe, C 6.0 6.7
Given the Cu-Zn phase diagram below, determine the amount of the phase/s present of a 75 wt% Zn -25 wt% Cu alloy for the following temperatures. Indicate the required composition for each temperature in the diagram. Round off your final answers up to two decimal places. Show your solutions completely and neatly and follow the table format below, Temperature Phase/s present Phase composition Relative amount 600 °C 570 °C y+ L 700 1200 8+L L 600 P 598°C 560°C 570 |1000 e + L y +e 500 60 68.6 70 74.3 75 78.2 80 90 Composition (wt % Zn) Temperature (°C) ta Temperature (°F)