![Consider a dislocation in an FCC crystal with the following characteristics: tCR0.5 MPa, 5-(a / /6 )[ 1 1 2] and b= (a/2)[ 1 1 0] a) Determine the slip plane for this dislocation. b) Calculate the magnitude of the applied normal stress in the [010] direction necessary to cause motion of this dislocation. Repeat part (b) for a normal stress applied in the [001] direction. c)](http://img.homeworklib.com/questions/f92f3090-6e9f-11eb-bb54-1348e28c2a1d.png?x-oss-process=image/resize,w_560)
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Consider a dislocation in an FCC crystal with the following characteristics: tCR0.5 MPa, 5-(a / /6...
A single crystal of Al has the FCC crystal structure and is oriented such that a...
A single crystal of Al has the FCC crystal structure and is oriented such that a tensile stress is applied parallel to the [010] direction. If the critical resolved shear stress for this material is 0.2 MPa, calculate the magnitude(s) of applied stress(es) necessary to cause slip to occur on the (111) plane in each of the [1̅10] [1̅01] [011̅] Also, which of these slip systems is “preferred” for slip?
1. Chapter 9. Problem#1 (40p): Consider a single crystal FCC iron oriented itch tensile stress applied along |122] direction. A) (10p) Draw a unit eell and show there: the plane (111), tensile di...
1. Chapter 9. Problem#1 (40p): Consider a single crystal FCC iron oriented itch tensile stress applied along |122] direction. A) (10p) Draw a unit eell and show there: the plane (111), tensile direction, normal to the plane direction and slip directions (110,(101] and lo11) B) (10p) Compute the resolved shear stress in (MPa) on plane (111) along the three slip direction given in (B), when tensile stress of 80 MPa is applied. C) (10p) If the critical resolved shear stress...
1. Consider a metal single crystal oriented such that the normal to the slip plane and...
1. Consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of 43.10 and 47.9° respectively, with the tensile axis. If the critical resolved shear stress is 20.7 MPa will an applied stress of 45 MPa cause the single crystal to yield? If not, what stress will be necessary? (10 points)
Problem 3: Consider a metal single crystal oriented such that the normal to the slip plane...
Problem 3: Consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of 43.1° and 47.9°, respectively, with the tensile axis. If the critical resolved shear stress is 20.7 MPa (3000 psi), will an applied stress of 45 MPa (6500 psi) cause the single crystal to yield? If not, what stress will be necessary?
pls answer question (ii) a) A single crystal of an FCC metal is oriented so that...
pls answer question (ii)
a) A single crystal of an FCC metal is oriented so that the [001] direction is parallel to an applied stress of 10 MPa. Calculate the resolve shear stress acting on the (111) slip plane in the [110], [011] and [101] slip directions. The stress and strain behaviour for the metal is shown in figure 4. 400 350 300 250 Stress (MPa) 200 150 100 50 0 0.00 0.02 0.04 0.06 0.08 Strain Figure 4 (i)...
A single crystal in the form of a cube has two possible slip planes. (1) and...
A single crystal in the form of a cube has two possible slip planes. (1) and (2). as shown in the sketch below. Each of these planes has two possible slip directions, (a) and (b), as is also shown. The angle between the tensile load axis and slip plane normal for both slip planes is 450 40 <plane (1)> <plane (2)> a) If a stress is applied to this crystal in the direction noted, specify which particular (eg. plane (1),...
pts) ectively, with the tensile stress of 12 MPa (1750 psi) cause the single cry och...
pts) ectively, with the tensile stress of 12 MPa (1750 psi) cause the single cry och Aangermal to slip plan and the slip direction are at angles of 60° axis. If the critical resolved shear stress is 6.2 l to yie that the normal to the slip plane Consider a metal single crystal oriented saod 35 res(go ps). nt, what stress nted such shear stress is 6.2 MPa (900 psi), will an applied If not, what stress and 35°, resp...
Problem 1: Calculate the resolved shear stress acting on the (101) [111] system for a single...
Problem 1: Calculate the resolved shear stress acting on the (101) [111] system for a single crystal of BCC molybdenum subject to the following: • Applied stress: 55 MPa • Direction of applied stress: [001] (a) Sketch the direction of applied stress in the cubic cell diagram on the right: (b) Use the cubic cell diagram on the diagram on the right to sketch: • The slip plane • The slip direction (c) Determine the indices for the direction normal...
20 points. The frictional shear stress to move a dislocation through a perfect crystal is given...
20 points. The frictional shear stress to move a dislocation through a perfect crystal is given by Ti = G exp((-2nd / b(1-v)) where d is the atomic spacing on close packed plane and b is the magnitude of the Burgers vector. Calculate ty for an fcc Cu crystal, if the dislocation is a Shockley partial. The shear modulus Cu is 42 GPa, its Poisson's ratio is 0.3, and its lattice parameter is 3.618.
5. A cubic close-packed (FCC) metal is deformed under tension. The tensile axis lies along [2 -3 1] A. What is the...
5. A cubic close-packed (FCC) metal is deformed under tension. The tensile axis lies along [2 -3 1] A. What is the primary slip system? [0-1 --1), [01 1 (1- 1), [-1 0] (1 1 -1), [1 101 (1 -1 1) B. Determine cross slip and co-planar slip systems for that system. C. IF the critical resolved shear stress of that slip system was equal to 2 MPa, calculate the applied stress required to start plastic deformation in the material...
1. Chapter 9. Problem#1 (40p): Consider a single crystal FCC iron oriented itch tensile stress applied along |122] direction. A) (10p) Draw a unit eell and show there: the plane (111), tensile direction, normal to the plane direction and slip directions (110,(101] and lo11) B) (10p) Compute the resolved shear stress in (MPa) on plane (111) along the three slip direction given in (B), when tensile stress of 80 MPa is applied. C) (10p) If the critical resolved shear stress...
1. Consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of 43.10 and 47.9° respectively, with the tensile axis. If the critical resolved shear stress is 20.7 MPa will an applied stress of 45 MPa cause the single crystal to yield? If not, what stress will be necessary? (10 points)
Problem 3: Consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of 43.1° and 47.9°, respectively, with the tensile axis. If the critical resolved shear stress is 20.7 MPa (3000 psi), will an applied stress of 45 MPa (6500 psi) cause the single crystal to yield? If not, what stress will be necessary?
pls answer question (ii)
a) A single crystal of an FCC metal is oriented so that the [001] direction is parallel to an applied stress of 10 MPa. Calculate the resolve shear stress acting on the (111) slip plane in the [110], [011] and [101] slip directions. The stress and strain behaviour for the metal is shown in figure 4. 400 350 300 250 Stress (MPa) 200 150 100 50 0 0.00 0.02 0.04 0.06 0.08 Strain Figure 4 (i)...
A single crystal in the form of a cube has two possible slip planes. (1) and (2). as shown in the sketch below. Each of these planes has two possible slip directions, (a) and (b), as is also shown. The angle between the tensile load axis and slip plane normal for both slip planes is 450 40 <plane (1)> <plane (2)> a) If a stress is applied to this crystal in the direction noted, specify which particular (eg. plane (1),...
pts) ectively, with the tensile stress of 12 MPa (1750 psi) cause the single cry och Aangermal to slip plan and the slip direction are at angles of 60° axis. If the critical resolved shear stress is 6.2 l to yie that the normal to the slip plane Consider a metal single crystal oriented saod 35 res(go ps). nt, what stress nted such shear stress is 6.2 MPa (900 psi), will an applied If not, what stress and 35°, resp...
Problem 1: Calculate the resolved shear stress acting on the (101) [111] system for a single crystal of BCC molybdenum subject to the following: • Applied stress: 55 MPa • Direction of applied stress: [001] (a) Sketch the direction of applied stress in the cubic cell diagram on the right: (b) Use the cubic cell diagram on the diagram on the right to sketch: • The slip plane • The slip direction (c) Determine the indices for the direction normal...
20 points. The frictional shear stress to move a dislocation through a perfect crystal is given by Ti = G exp((-2nd / b(1-v)) where d is the atomic spacing on close packed plane and b is the magnitude of the Burgers vector. Calculate ty for an fcc Cu crystal, if the dislocation is a Shockley partial. The shear modulus Cu is 42 GPa, its Poisson's ratio is 0.3, and its lattice parameter is 3.618.
5. A cubic close-packed (FCC) metal is deformed under tension. The tensile axis lies along [2 -3 1] A. What is the primary slip system? [0-1 --1), [01 1 (1- 1), [-1 0] (1 1 -1), [1 101 (1 -1 1) B. Determine cross slip and co-planar slip systems for that system. C. IF the critical resolved shear stress of that slip system was equal to 2 MPa, calculate the applied stress required to start plastic deformation in the material...
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Eagle99 Tue, Feb 8, 2022 11:24 PM