EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 12RQ
What is a slip system, and what is its significance?
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(a) Define a slip system.
(b) Do all metals have the same
slip system? Why or why not?
7-5
The behavior of each of the following materials is:
(1)
on
Viscosity
(2)
(3)
Shear rate
O a.
(1) Newtonian, (2) shear thickening, (3) shear-thinning
O D. (1) shear thickening, (2) Newtonian, (3) shear-thinning
(1) shear-thinning, (2) shear thickening, (3) Newtonian
d.
(1) shear-thinning, (2) Newtonian, (3) shear thickening
Chapter 1 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 1 - What is the difference between an atom and a...Ch. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Define anisotropy. What is its significance?Ch. 1 - What effects does recrystallization have on the...Ch. 1 - What is strain hardening, and what effects does it...Ch. 1 - Explain what is meant by structure-sensitive and...Ch. 1 - Prob. 9RQCh. 1 - What influence does grain size have on the...
Ch. 1 - What is the relationship between the nucleation...Ch. 1 - What is a slip system, and what is its...Ch. 1 - Explain the difference between recovery and...Ch. 1 - What is hot shortness, and what is its...Ch. 1 - Explain the advantages and limitations of cold,...Ch. 1 - Describe what the orange peel effect is. Explain...Ch. 1 - Some metals, such as lead, do not become stronger...Ch. 1 - Describe the difference between preferred...Ch. 1 - Differentiate between stress relaxation and stress...Ch. 1 - What is twinning? How does it differ from slip?Ch. 1 - Prob. 21QLPCh. 1 - What is the significance of the fact that some...Ch. 1 - Is it possible for two pieces of the same metal to...Ch. 1 - Prob. 24QLPCh. 1 - A cold-worked piece of metal has been...Ch. 1 - What materials and structures can you think of...Ch. 1 - Two parts have been made of the same material, but...Ch. 1 - Do you think it might be important to know whether...Ch. 1 - Explain why the strength of a polycrystalline...Ch. 1 - Describe the technique you would use to reduce the...Ch. 1 - What is the significance of the fact that such...Ch. 1 - Prob. 32QLPCh. 1 - It has been noted that the more a metal has been...Ch. 1 - Is it possible to cold work a metal at...Ch. 1 - Comment on your observations regarding Fig. 1.14.Ch. 1 - Is it possible for a metal to be completely...Ch. 1 - Prob. 37QTPCh. 1 - Prob. 38QTPCh. 1 - Plot the data given in Table 1.1 in terms of...Ch. 1 - A strip of metal is reduced from 30 mm in...Ch. 1 - Prob. 41QTPCh. 1 - How many grains are there on the surface of the...Ch. 1 - Prob. 43QTPCh. 1 - Prob. 44QTPCh. 1 - Prob. 45QTPCh. 1 - A technician determines that the grain size of a...Ch. 1 - If the diameter of the aluminum atom is 0.28 nm,...Ch. 1 - The following data are obtained in tension tests...Ch. 1 - Prob. 50QTPCh. 1 - Prob. 51QTPCh. 1 - Prob. 52QTPCh. 1 - Same as Prob. 1.39, but ASTM no. versus...Ch. 1 - By stretching a thin strip of polished metal, as...Ch. 1 - Draw some analogies to mechanical fiberingfor...Ch. 1 - Draw some analogies to the phenomenon of hot...Ch. 1 - Take a deck of playing cards, place a rubber band...Ch. 1 - Give examples in which anisotropy is scale...Ch. 1 - The movement of an edge dislocation was described...
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- 1. There are three slip systems on a FCC octahedral plane, i.e. one of the {111} planes. Assume a2 MPa tensile stress is applied along the [100] direction of a gold single crystal, whose criticalresolved shear stress is 0.91 MPa at room temperature. Demonstrate quantitatively thatmeasurable slip will not occur on any of the three slip systems containing the (111) plane as aresult of this applied tensile stress. (Hint: Schmid’s law) 2. Identify the Burgers vector (using vector notation) of a screw dislocation that can cross-slipbetween (111) and (111) planes of an FCC crystal (Hint: Use Weiss zone law). 3. Why are dislocations not considered thermodynamic equilibrium defects like vacancies?Explain by describing the relative interplay between entropy and enthalpy affecting the Gibbsfree energy of the dislocations-containing material system.arrow_forwardQuestions are in the pictures.arrow_forwardWhat is Bragg’s law? What is its use?arrow_forward
- What is a solid solution? In general, what is its implication on the mechanical behavior of metals (i.e., increase or decrease in strength)?arrow_forwardDraw a stress vs strain rate curve for a shear thickening material. How does the viscosity of such a material change with time? What is an example of a shear thickening material?arrow_forwardWhich one statement is true. Explainarrow_forward
- What is G-P zone? Draw yield stress vs. aging time, use a simple sketch andexplain the mechanism. Why does yield stress change by aging time ?arrow_forwardWhat are slipbands and slip lines? What causes the formation of slipbands on a metal surface? What are the principal slip planes and slip directions for FCC, BCC and HCP metals?arrow_forwardDetermine the interplanar spacing and the length of the Burgers vector for slip on the (110)[1-11] slip system in BCC tantalum(ao=0.33026 nm). Repeat, assuming that the slip system is a (111)[1 -10] system. What is the ratio between the shear stressesrequired for slip for the two systems?arrow_forward
- Consider a metal rod with a critical resolved shear stress of 40 MPa for a specific crystallographic plane (hkl). The angle between the normal to the plane and the applied force is 30 degrees, and the angle between the slip direction and the force is 15 degrees. Two force levels of F1 = 75 N and F2 = 40 N is applied. The cross-sectional area of the rod is 1 mm^(2). Will the slip initiate at the two force levels? Select one: a. F1: Yes, F2: No b. F1: No, F2: No OC. F1: Yes, F2: Yes Od. F1: No, F2: Yesarrow_forwardConsider a metal rod with a critical resolved shear stress of 40 MPa for a specific crystallographic plane (hkl). The angle between the normal to the plane and the applied force is 30 degrees, and the angle between the slip direction and the force is 15 degrees. Two force levels of F1 = 75 N and F2 = 40 N is applied. The cross-sectional area of the rod is 1 mm^(2). Will the slip initiate at the two force levels? Select one: O a. F1: Yes, F2: No O b. F1: Yes, F2: Yes O C. F1: No, F2: Yes d. F1: No, F2: Noarrow_forwardA single crystal of aluminum is loaded under a stress state such that ơ11 = 250 kPa, 022 = 50 kPa , o33 = 10 kPa and T23 = T 31 = T 12 = 0 Assume that slip occurred on the (111) plane in the [1 -1 0] direction and only on this slip system. What is the shear stress on this slip system?arrow_forward
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