Social Deviance-List of copper alloys

800 A Eutectoid temperature H 1400 700 A H 1200 600 1000 500 B 800 400 A 300 600 M(start) 200 M + A 50% 400 M(50%) M(90%) 100 200 10-1 1 10 102 103 104 105 Time (s) Using the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition, specify the final microstructure and approximate amount of each. Assume a small specimen has been held long enough to have achieved a complete and homogeneous austenitic structure prior to treatment. Sample (1): Quickly cool specimen from 800°C to 575°C, hold for 10 s, then quench to room temperature. Sample (2): Quickly cool specimen from 800°C to 500°C, hold for 100 s, then quench to room temperature. O after treatment, sample 1 is 50% pearlite, 50% austenite O after treatment, sample 2 is bauxite O after treatment, sample 1 is 25% pearlite O after treatment, sample 2 is bainite O after treatment, sample 2 is austenite O None of the answers is correct. O after treatment, sample 2 is coarse pearlite O after treatment, sample 1 is…

What is the composition, in at. %, of an alloy that contains 35g of Cu and 42g of Zn Acu= 63.55g/molAzn=65.41g/mol

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The TTT diagram for a 1077 eutectoid steel is given. Explain the heat treatment process to form 50% Fine Pearlite + 50% Coarse Bainite. 800 A 1400 Eutectoid temperature 700 A 1200 600 1000 500 B 800 400 A 300 600 M(start) 200 M + A 50% 400 M(50%) М190%) 100 200 10-1 1 10 102 103 104 105 Time (s) Temperature (°C) Temperature (°F)

-SC Show Attempt History Current Attempt in Progress Consider 6.8 kg of austenite containing 0.43 wt% C, cooled to below 727°C (1341°F). (a) What is the proeutectoid phase? (b) How many kilograms each of total ferrite and cementite form? (c) How many kilograms each of pearlite and the proeutectoid phase form? See Animated Figure 9.24 Part 1 Part 2 How many kilograms of total ferrite and cementite form? (a) ma = kg (b) mFe, C 1 i Save for Later Q = i F1 2 W F2 #3 kg 80 F3 E 4 000 000 F4 R % F5 T MacBook Pro < 6 A Attempts: 0 of 5 used 6 Y & 7 AA F7 U *

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The TTT diagram for a 1076 eutectoid steel is given: What is the heat treatment process to form 50% Coarse Pearlite + 50% Martensite. 800 A 1400 Eutectoid temperature 700 A 1200 600 1000 500 800 400 A 600 300 M(start) 200 50% 400 M + A M(50%) M(90%) 100 200 10-1 1 10 102 103 104 105 Time (s) Temperature (°C) Temperature (°F)

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As the head of R&D in your company which deals with aluminum, you are faced with aluminum alloy 2014 which was solution heat-treated. The alloy needs to be hardened by precipitation hardening to have a minimum yield strength of 345 MPa and ductility of at least 12% EL. What practical precipitation heat treatment with respect to temperature and time will you recommend to give these mechanical properties? Explain your answer Usc - A Z Type here to search @ 2 W S alt TRINIT # X 3 aps E D $ 4 C R Atomic percentage, magnesium O ene F % 5 T D V G 6 Y B & 7 H U N 8 J 9 11 M K Ľ L P 73 prt sc ? Ľ 1 backspace pause 40) Turn 8:59 AM 9/13/2022 11 enter 7 home A 28. 1 5 end 9

evwVmpreun atatus: QUESTION 34 Consider a single crystal of RENE NS, a second generation Nbased superaloy. This alloy is used in the hottest part of gas turbine engines for aerospace. The matrix phase has a face-centered-cubic (FCC) crystal structure. This single crystal has been subjected to a tensile stress that is applied along a (314) crystal direction (aka, the axis f sip occurs on a (1 1 1) plane in a (101) direction, please cakulate the stress in MPa at which ylelding will occur. The critical resolved shear stress for this alloy is 800 MPa. cose Fo cos dcos (CRSS) (1SJos dcose 3184.3 O 41,600.0 O800.1 O 6368.7 579.0 400.1 Save A A es nit to sove ond subent. Cck Sae All A es to save dll ansers 3.

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

2) There is an aluminum-copper alloy. The phase diagram is given below. What heat treatment do you apply? Using this graph, how is it possible to increase the strength and hardness of this alloy? Consider this question within the scope of heat treatments. Composition (at % Cu) 10 20 30 700 1200 600 L a+ L 0 +L 1000 a 500 (CuAl,) a + 0 800 400 600 300 10 20 30 40 50 (AI) Composition (wt% Cu) Temperature (°C) Temperature (°F)

Q3: Analyze the following figure and answer the following question (Fe-C Diagram) ? 1639 Liquid 1400 +y 7+L L-Fec 1146 C Fe.C- 910 7- Fesc 727 C o.025 a- Fesc 6.67 of Hypo ectd- Hyper ectd 0810 Steel Cast Iron I- What are the % solubility and temperature of exist of a-ferrite? b- 0.025% and 273°c to 910 c. d- 0.05% and 910°c to 1124°c. a-0.05% and 273°c to 910°c. c- 2.1% and 910°c to 1394°c. 2- What are the % solubility and temperature of exist of Austenite (Y)? a- 0.05% and 273°c to 910°c. c- 2.1% and 910°c to 1394°c. b- 0.025% and 273°c to 910°c. d- 0.09% and 1394°c to 1539°c. 3- What are the % solubility and temperature of exist of 8-ferrite? a- 0.05% and 273°c to 910°c. b-0.025% and 273 e to 910°e. c- 2.1% and 910°c to 1394°c. d- 0.09% and 1394°c to 1539°c. 4- What is the % C content in Cementite Fe3C? AB a- 6.67%. b- 0.025%. c- 2.1%. d- 0.09%. (aradu

Identify the main properties trend (grain size, ductility, strength, hardness) of metal alloys as a percent of cold work on the diagram below.

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According to Reference [1], alloys of nickel (Ni) and tungsten (W) are can form substitutional solid solutions up to approximately 11 at% W. Consider two different alloy compositions: Ni-5W (5 at% W) and Ni-10.5W (10.5 at% W). A. Which composition should be more ductile? B. Which composition should be stronger? C. Using the oy~ C¹/2 relationship from the lecture slides, how many times larger should the yield strength be for Ni-10.5W compared to Ni-5W? D. Where should the tungsten atoms sit relative to the dislocation on or opposite the side with the extra half-plane? You will need information from Appendixes of the textbook.

The Sheady Ceap data of stainless cheel tkon at Stress level Fompa ů qiven in te Table Compute he steady-ctate Cleep dets for this alloy at 1a5ok and Shee level of 5omPaf Hhe shees erpinen t fox the alloy ū 7.0. fempersiuse 977 1089 2.0X 183

al 72% Í 22:39 365 3bed sleimen 10 minutes ago Question 1 Determine the percentage of ductility of a metal alloy having the following tensile stress-strain diagram. Not yer answered Stress-Strain Diagram Marked out of 15.00 P lag question 025 Strain jem/em Select one: O 25% O 0.26

QI/ There are three alloys ( A,B,C) have atomic wieght, desity, and atomie radus as listed in following table and avagadro number of 6.022 x10 Classify its crystal structure F.C.C., B.C.C ,or S.C. atomic radus (nm) 0.125 Alloy atomic weight (g/ mol) 77.4 density (g/ em) 8.22 A B 107.6 13.42 0.133 127.3 9.23 0.142

Temperature C 1100+ 1000 Liquid 900. 800. 700 600 L+AL 500 400 (AI) 300+ 0 548.2°C (Al)+0 (Cu) ΑΙ 10 20 30 40 50 60 70 80 Weight Percent Copper overall composition of alloy is 18:6wti. Cu Initial masses of individual metals A1-94·149 2) Cu-21529 90 100 Cu at 1000°c Q1 What is the composition of the first solid to appear Q2) What is the Composition of the second solid to appear. Q3) If the alloy where to be reheated, what would be the composition of the first liquid to appear. Quy Estimate the temp us time plot for the cooling process. from 100°c to room temperature.

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QII There are three alloys ( A,B,C) have atomic wieght, desity, and atomie radus as listed in following table and avagadro number of 6.022 x10 Classify its crystal structure F.C.C., B.C.C ,or S.C. Alloy atomic weight (g/ mol) 77.4 density (p/ em) 8.22 atomic radus (nm) 0.125 A B 107.6 13.42 0.133 127.3 9.23 0.142

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How would you callout magnesium in an engineering drawing note? I want to call out Magnesium AZ31B, plate, AMS4376. This is what I have so far: Notes: 1. Material: MAGNESIUM ALLOY, PLATE, UNS M11311 (AZ31B), PER AMS4376, CONDITION -H26 Is this correct?

The properties of a titanium allow used in commercial airplanes are shown in the table: Strength (MPa) Grain Size (mm) 0.020 162 0.055 148 Determine a) the constants of the Hall-Petch equation and b) the grain size required to obtain a strength of 192 MPa

What are the units of temperature and time for whichthe typical Larson-Miller parameter is equal to ~20 formany metallic alloys?

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For a Fe-C alloy with a eutectoid composition, an austenite was rapidly cooled down to 450°C, held for 10 sec, and quenched to room temperature. What is the final microstructure based on its TTT curve? Amount Temperature of Transformation, C 700 600 500 400 300 200 Ae₂! Ae₁ Austenite unstable Ms. 10 10² 103 104 105 seconds Austenite stable 50%- 100 MF TELEP P 100% completed F+B Coarse Pearlite - Fine Pearlite -Upper Bainite (Feathery) Lower Bainite → Martensite + Bainite Martensite 1 1sec 1 min 1hr Transformation Time (Log. Scale) O a. 50% bainite and 50% martensite O b. 50% austenite and 50% bainite O c. 100% bainite O d. 100% martensite Finer Lamellac Bainitic Pearlitic Austenite Fine more Acicular Rapid Etching Martensitic cicular, Slow Etching V.P.H. 210 320 450 700 750