4. The average grain diameter for a brass material was measured as a function of time at T,which is tabulated below at two different times:Time (min)Grain Diameter (mm)30903.9 × 10-26.6 × 10-2(a) What was the original grain diameter (using n=2)?(b) What grain diameter would you predict after time, t, at temperature, T?Use T = 650 °C; t = 150 min; n = 2 in the grain size equation

Please see the attached image for the answer Explanation:

Answered: 4. The average grain diameter for a…

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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You are given three metal test samples, with the same chemical composition and differing grain sizes: A: 5.0, B: 10.0 and C: 20.0 microns. Samples A and B have been tested and have yield stresses of 142.4 MPa and 135.8 MPa (all numbers are rounded off to the 1st decimal point). Based on this information, which of the following values do you think will be the closest to the yield stress of Sample C? In calculating the answer, use the Hall-Petch relation between yield stress of a metal o vield and the grain size of the metal d, which is Oyield = 00 + kd¬1/2 where k and og are constants. (This question has only one correct answer) а. 100.6 MPa b. 131.1 MPa С. 152.4 MPa O d. 115.8 MPa е. 128.1 MPa
1- what materials are included here (z parameter), type of materials considered, property or properties plotted, domain of c, parameter identified 2- what are the vertical and horizontal trends presented 3-what is the take away story from this plot please answer i will upvote
S/N Grain Diameter (mm) Strength (MPa) 1. 0.015 170 2. 0.025 158 3. 0.035 151 4 0.050 145 Determine The constants in the Hall-Petch equation; and The grain diameter to obtain strength of 200 Mpa.
Tungsten (W) has the BCC crystal structure. The atomic radius is R = 0.137 nm and the atomic mass is M = 183.95 g/mole. %3D What is the density of Tungsten in g/cm³? Given: Avogadro's Number NA = 0.6023 × 1024 (atoms/mole) Select one: O a. 5.30 O b. 6.28 Oc. 2.534 Od. 6.77 Oe. 19.28
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Cu single crystal is anisotropic in nature. If it has the Compliance matrix elements such as shown below, what is the various E’s, G’s and Poisson’s ratios of this anisotropic single crystal Cu?
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1. For the stress-strain curve shown below, please estimate the properties indicated. (a) Fracture Strain Please do your work on a separate sheet of paper, and put your answers in the boxes on the right. Be sure to include the proper symbol and units. Stress Strain 70 60 50 Stress (ksi) 240 30 20 10 70 0 0.000 60 50 Stress (ksi) 40 20 10 KULL 0 0.000 0.010 0.050 0.100 Strain (in/in) Stress Strain 0.020 0.030 Strain (in/in) 0.040 0.150 0.050 (b) Ultimate Tensile Stress (c) Fracture Stress (d) Proportional Limit (e) Elastic Modulus (1) Yield Stress (g) Tensile Toughness (Modulus of Toughness) (h) Modulus of Resilience
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
You have been given the following test sample data following mechanical testing of 15 test pieces of Silicon Nitride. What is the Weibull modulus of this material? Would you advise the use of a similar material with a Weibull Modulus of 16.3 and a mean failure stress of 485 MPa, if you anticipate that the peak stress on the material could be 430 MPa? Sample 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Select one or more: O a. No O b. 18.6 O C. 13.4 O d. Yes O e. 15.7 f. 17.1 Failure Stress (MPa) 423 459 496 432 447 467 473 499 485 479 505 530 526 490 510 <
A structural member 10 cm long must be able to support a load of 50,000 N without experiencing any plastic deformation. Given the following data for brass, steel, aluminum, and titanium, rank them from least to greatest weight in accordance with these criteria. Yield strength Ultimate tensile Alloy Density (g/cm3) (MPa) strength (MPa) Brass 415 600 8.5 Steel 860 800 7.9 Aluminum 310 435 2.7 * 700 Titanium 550 4.5
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