The average grain diameter and yield strength for a brass material were measured as a function of time at 650°C. Given the following yield strengths for the two specimens, compute the heat treatment time required at 650°C to give a yield strength of 100 MPa. Assume a value of 2 for n, the grain diameter exponent. Time (min) 30 90 i Yield Strength (MPa) 90 75 min Grain Diameter (mm) 3.9 x 10-2 6.6 x 10-²

The average grain diameter and yield strength for a brass material were measured as a function of time at 650°C. Given the following yield strengths for the two specimens, compute the heat treatment time required at 650°C to give a yield strength of 100 MPa. Assume a value of 2 for n, the grain diameter exponent. Time (min) 30 90 i Yield Strength (MPa) 90 75 min Grain Diameter (mm) 3.9 x 10-2 6.6 x 10-²

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

See similar textbooks

Related questions

Q: t as a separate question that has no relationship to previous parts of the question. 1 and 2 are…

Q: Steady-state creep rate data are given here for some alloy taken at 200°C (473 K): i Es (h-¹) 2.2 x…

Q: Question The yield strength for an aluminum alloy that has an average grain diameter of 10 um is 400…

A: OPTION B -668MPa is the right answer. Detailed explanation and solution of the above problem…

Q: Do provide explanations too. Thank you.

A: The grain boundary and bulk diffusion creep both are the mechanism that leads to the elongation of…

Q: 1. Two iron samples with different grain sizes are tensile tested. The grain size of sample A is…

A: The size of grain A and B is 1.1 and 0.37 μm respectively.

Q: 2) A 1 in Dia x 3 in long mild steel hammer head is to be heat treated for surface hardening. If the…

Q: The yield strength for an alloy that has an average grain diameter of 1.6 × 10² mm is 320 MPa. At a…

Q: f 800 MPa, and a tensile this specimen experienc long? Why or why no

Q: | 1. A stacking fault region is a planar defect TT 2. Screw dislocation can cross slip under…

Q: A ceramic with KIc = 4 MPa m1/2 contains pores with radius a = 5 µm due to incomplete sintering.…

Q: How does strain hardening and grain size reduction affect elastic modulus

Q: Sintered silicon nitride parts are expected to experience tensile stresses 50% of the ultimate…

A: Given data:- tensile stresses (σ) =50% of the ultimate tensile strength Specific surface energy (γ)=…

Q: During 650°C, the average grain diameter of a brass material was measured as a function of time, as…

Q: S/N Grain Diameter (mm) Strength (MPa) 1. 0.015 170 2. 0.025 158 3. 0.035 151 4 0.050…

A: (1)Hall-Petch equationstrength = sigma0 + K*d^(-1/2)to obtain two constants K and sigma0, two…

Q: In designing a ceramic part for a jet engine, to ensure that the part does not fail, we plan to…

A: Write the equation of strain fracture touhhness of the ceramic partKk=fσπaKkfσ=πasquaring both…

Q: A cylindrical specimen of a cold-worked brass has a ductility (%EL) of 33%. If its cold-worked…

Q: Problem 1 out of 2: A single crystal of a metal that has the BCC crystal structure is oriented such…

Q: You are given three metal test samples, with the same chemical composition and differing grain…

Q: For the stress-strain curve shown below, please estimate the properties indicated. Please do your…

A: Given:Stress-Strain curve.To find:Various mechanical properties enlisted.

Q: Figure QI(a) shows the stress-strain graphs of four dıfferent materials labelled as A, B, C and D.…

A: a) The order of strain hardening in the material ABCD is as below. A> C >B >D b) Proof…

Q: In the Table below Data for Mar M 247-a Nickel base superalloy is shown. (1) Plot the steady state…

A: It is asked to plot the steady state strain rate and time to rupture to predict a relationship…

Q: In order to find out the effects of the grain sizes on the mechanical strength of a metal, three…

A: Given data:

Q: You have been asked to draw up a specification for a ceramic cladding tile that is likely to…

Concept explainers

Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.

Question

The average grain diameter and yield strength for a brass material were measured as a function of time at 650°C. Given the following
yield strengths for the two specimens, compute the heat treatment time required at 650°C to give a yield strength of 100 MPa.
Assume a value of 2 for n, the grain diameter exponent.
Time (min)
30
90
Yield Strength
(MPa)
90
75
min
Grain Diameter (mm)
3.9 x 10-2
6.6 x 10-2

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Types of Properties of Engineering Materials

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Pravinbhai
The yield strength for an alloy that has an average grain diameter of 5.9 x 10-2 mm is 148 MPa. At a grain diameter of 7.8 × 10-³ mm, the yield strength increases to 233 MPa. At what grain diameter, in mm, will the yield strength be 247 MPa? d = i mm
The yield strength for an alloy that has an average grain diameter of 5.2 x 102 mm is 110 MPa. At a grain diameter of 6.3 x 103 mm, the yield strength increases to 251 MPa. At what grain diameter, in mm, will the yield strength be 222 MPa? d = mm
A component made of 7075-T6 aluminum alloy has an edge crack of 1.4 mm in length. Plane strain fracture toughness of this alloy is given as 27 MPavm. Geometrical factor of the crack is given as 1.2. (a) If this alloy is subjected to uniaxial tensile stress of 380 MPa, determine whether sudden brittle fracture occurs or not. (b) Calculate the maximum allowable crack size for this component in order not to be failed in brittle manner under a stress of 1000 MPa (Density of steel 7.85 g/cm³, 9.80665 N = 1 kg). Modulus of elastisity, GPa Ultimate tensile Yield strength, Alloy strength, MPa MPa 2014 Al alloy Bronze (92Cu-8Sn) High carbon steel Pure Titanium 97 186 380 72 110 152 380 615 215 240 330 107
1. Suppose that you have measured the strain aging kinetics of a high-strength low-alloy (HSLA) steel and obtained the following results: Aging Temperature (°C) Aging Time (min) ΔΥ (MPa) 150 240 40 130 1800 40 Determine (using a mathematical rather than graphical approach) the time necessary to obtain a strengthening increment, AY, of 40 MPa at an ageing temperature of 120°C. State any assumptions made in order to arrive at your approximation.
A structural beam is built from steel with a yield strength of 345 MPa. The structure has a minimum service temperature of 5 oC, where the fracture toughness of the steel KIC = 60 MPam. What is the minimum surface crack lengths that must be detected by quality control to ensure that the full yield strength of the steel is available in the beam? Assume geometric parameter Y = 1 and plain strain conditions. Answer in millimeters.
3. An uncold-worked brass specimen of average grain size 0.01 mm has a yield strength of 150 MPa (21,750 psi). Estimate the yield strength of this alloy after it has been heated to 500°C for 1000 s, if it is known that the value of σo is 25 MPa. (Note that the axis has logarithmic scale). Grain diameter (mm) (Logarithmic scale) 1.0 0.1 0.01 1 10 850°C 800°C 700°C 102 Time (min) (Logarithmic scale) 600°C 500°C 103 104
The yield strength for an alloy that has an average grain diameter of 4.6 x 10-2 mm is 105 MPa. At a grain diameter of 7.7 × 103 mm, the yield strength increases to 248 MPa. At what grain diameter, in mm, will the yield strength be 234 MPa? d = i mm
9. Consider a metal rod, whose grain size can be adjusted by different processing techniques. The graph below shows how the yield stress changes with grain size d; the x-axis is logarithmic. The curve reaches a limiting value of 60 MPa as indicated by the horizontal dashed line on the y-axis, for very large grain sizes. Also, you are given the information that at d = 25 microns (vertical dashed line), the yield stress is 100 MPa. Using this information, what will be the yield stress at d = 5 microns? Select the closest numerical value. Use the Hall-Petch relation in working out your answer. Yield stress (MPa) ● ● 228882S 130 120 110 100 60 10⁰ 10¹ 10² Grain size d (microns) 132.4 MPa 149.4 MPa 165.2 MPa 156.3 MPa 10
Calculate the ductility of this steel alloy in %EL.
In an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation? Select one: a. O b. 129.5, yes C. 133.5 MPa, yes e. 120.5 MPa, no d. 140.5, no 123.5 MPa, yes