The minimum yield strength for iron with an average grain size of 6x10^-2 mm is 135 MPa, this increases to 260 MPa when the average grain size is reduced to 8x10^-3 mm. What must the average grain size be to achieve a yield strength of 205 MPa.

Q: Determine the critical resolved shear stress on a BCC single crystal if a normal stress of 10 MPa…

A: Given data: Normal stress σ=10 MPa acts along l=[100] direction. Applied stress causes slip in the…

Q: A cold worked Al-alloy component takes 200 minutes to recrytallize at 250 °Č but takes 14 minutes at…

A: Solution: Given Data: t1=200 minutesT1=250oCt2=14 minutesT2=276oCT3=320oC…

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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: When λ=1.5Å and θ=30°, how much strain (Δd/d) is needed to cause a peak broadening same as that of…

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Q: (6) For an aluminum alloy under constant load, the creep rate increased by a factor of 2 when the…

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Q: (1) Compute the dislocation density in tungsten if the flow stress is controlled by the stress…

A: Since all the questions are different, according to our guidelines, we are supposed to answer 1st…

Q: The yield stress for a metal changes from 410 Nmm^-2 to 670 Nmm^-2 when the average grain diameter…

A: Given:σy1=410 N/mm2    σy2=670 N/mm2d1=0.053 mmd2=0.037 mmdavg=0.045 mmσy=560 N/mm2

Q: What is the Jominy experiment, what is it done for? write what you know how to use the data obtained…

A: The Jominy test is performed to measure the hardenability of steels. In the Jominy experiment one…

Q: A batch of casted mild steel has a modulus of elasticity of 200 GPa and a yield strength of 250MPa.…

A: Modulus of resilience is the maximum amount of energy that can be stored in a material without…

Q: Determine the material property of the materials from the following website. Material Property Data…

A: GIVEN = C1045  CARBON STEEL

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: b) Estimate the yield stress of copper containing an array of equally spaced second phase…

A: Yield strength alludes to the pressure at which the event of a foreordained measure of super durable…

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

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Q: le) Name four methods used for strengthening of metals. What is the common principle that these…

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Q: Q1. A tower crane is used to lift I beams to construct skyscraper. As shown in Figure Q1 (a), the…

A: When elastic cables are subjected to tensile force it tends to extend and this elongation per unit…

Q: 2. Immediately after recrystallization during annealing, this alloy was quickly cooled. Assume that…

A: Based on the information provided, the likely mechanism for the increase in yield strength (σy)…

Q: Please show how the value of b was calculated Calculate the dislocation density in tungsten if the…

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Q: From the grain distribution curve, D60 = 1.45 mm, D30 = 0.75 mm and D10 = 0.45 mm. Determine the…

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Q: Strain hardening aluminium increases the strength by reducing the number of dislocations True False

A:

Q: A copper-zine alloy has the properties shown in the table below. Grain Diameter (mm) Strength (MPa)…

A: (a).Hall-Petch equation-σy=σo+kd158=σo+k0.025158=σo+6.324k ........(1)145=σo+k0.050145=σo+4.47k…

Q: Determine the critical resolved shear stress on a BCC single crystal if a normal stress of 10 MPa…

A: Write the formula for the angle between two planes with Miller indices [u1 v1 w1 ] and [u2 v2 w2].…

Q: To put lattice defects in perspective, consider a metal blank that has a dislocation density of 10^3…

A: Given DataDislocation Density=103mm-2Dislocation Volume=103mm3Increased Dislocation Density=1010mm-2…

Q: Determine the material property of the materials from the following website. Material Property Data…

A: The mild and hot-rolled steel ASTM A36 is the most widely utilised. It is appropriate for grinding,…

Q: 4. The average grain diameter for a brass material was measured as a function of time at T, which is…

A: Please see the attached image for the answer Explanation:

Q: In cold working of metals, the elongated grain structure will give good properties in length…

A: The given statement is true.

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

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

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Q: When a cold-worked metal is heat-treated below its melting point over a period of time, which of the…

A: Explaining the effect of a cold worked metal is heat treated below it's melting point.

Q: The lower yield point for a certain plain carbon steel bar is found to be 135 MPa, while a second…

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Q: 2.2. When the Hall-Petch coefficient is 20 GPa nm/2, estimate the grain size of this alloy after…

A: Hall-Petch coefficient (k) = 20 GPa nm^1/2From the hand-written notes,yield strength of the alloy,…

Q: 5. Consider a single crystal of some hypothetical metal that has the FCC crystal structure and is…

A: The solution is provided below.

Q: A tensile stress of 25.0 MPa is applied on a single crystal of nickel oriented such that the tensile…

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Q: Calculate the critical resolved shear stress (magnitude) in crystal if a stress of 100 MPa in the SP…

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Q: :) Consider a homogeneous structure made out of metal subjected to homogeneous oundary conditions t…

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Q: Material Proper Material: Carbo Property: Ultim 49,900

A: Given; Material: Carbon Steel C1045 (AISI 1045) Cold Drawn  Diameter: 1 inch

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

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

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

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Q: The yield strength for an alloy that has an average grain diameter of 4.6 x 102 mm is 112 MPa. At a…

A:

Q: The engineering yield strength of an alloy is 80 ksi. If the modulus of elasticity for this alloy is…

A: (a)   let suppose the yield strength of the alloy is 23.9 ksi instead of 80 ksi   ( σ=E∑23.9 x…

Q: (a) Calculate the wt% of Ni and Cu. (b) Based on the figure below, what is the tensile strength of…

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Q: Q/ Which type of materials are selected for turbine blades and what are the main properties for…

A: The materials used in turbine blade are NI based alloys such Inconel 625, Inconel 718, and Inconel…

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.