EBK MANUFACTURING PROCESSES FOR ENGINEE
6th Edition
ISBN: 9780134425115
Author: Schmid
Publisher: YUZU
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Question
Chapter 3, Problem 3.18Q
To determine
The significance of metals like lead and tin having recrystallization temperature at about room temperature.
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1-illustrate the process which work above recrystallization temperature with neat sketch?
Establish the most salient distinctions between cold, hot and below recrystallization temperature work.
Cold working of metals will give better final
properties than hot working.
Select one:
True
False
Chapter 3 Solutions
EBK MANUFACTURING PROCESSES FOR ENGINEE
Ch. 3 - Prob. 3.1QCh. 3 - Prob. 3.2QCh. 3 - Prob. 3.3QCh. 3 - Prob. 3.4QCh. 3 - Prob. 3.5QCh. 3 - Prob. 3.6QCh. 3 - Prob. 3.7QCh. 3 - Prob. 3.8QCh. 3 - Prob. 3.9QCh. 3 - Prob. 3.10Q
Ch. 3 - Prob. 3.11QCh. 3 - Prob. 3.12QCh. 3 - Prob. 3.13QCh. 3 - Prob. 3.14QCh. 3 - Prob. 3.15QCh. 3 - Prob. 3.16QCh. 3 - Prob. 3.17QCh. 3 - Prob. 3.18QCh. 3 - Prob. 3.19QCh. 3 - Prob. 3.20QCh. 3 - Prob. 3.21QCh. 3 - Prob. 3.22QCh. 3 - Prob. 3.23QCh. 3 - Prob. 3.24QCh. 3 - Prob. 3.25QCh. 3 - Prob. 3.26QCh. 3 - Prob. 3.27QCh. 3 - Prob. 3.28QCh. 3 - Prob. 3.29QCh. 3 - Prob. 3.30QCh. 3 - Prob. 3.31QCh. 3 - Prob. 3.32QCh. 3 - Prob. 3.33QCh. 3 - Prob. 3.34QCh. 3 - Prob. 3.35QCh. 3 - Prob. 3.36QCh. 3 - Prob. 3.37QCh. 3 - Prob. 3.38QCh. 3 - Prob. 3.39QCh. 3 - Prob. 3.40QCh. 3 - Prob. 3.41QCh. 3 - Prob. 3.42QCh. 3 - Prob. 3.43PCh. 3 - Prob. 3.44PCh. 3 - Prob. 3.45PCh. 3 - Prob. 3.46PCh. 3 - Prob. 3.47PCh. 3 - Prob. 3.48PCh. 3 - Prob. 3.49PCh. 3 - Prob. 3.50PCh. 3 - Prob. 3.51PCh. 3 - Prob. 3.52PCh. 3 - Prob. 3.53PCh. 3 - Prob. 3.54P
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- What properties can annealing produce in metals?arrow_forwardHow do dislocationjunctions contributeto strengthening?arrow_forwardQ3 contd. (d) The yield strength values of pure aluminium (Al) and pure copper (Cu) are 25 MPa and 20 MPa, respectively; whereas the yield strength values of cold rolled Al-Mn-Mg alloy and cast 60-40 Brass (60% Cu, 40% Zn) are 200 MPa and 105 MPa, respectively. With aid of schematics, explain the main mechanisms account for the increases in the strengths. (e) A cylindrical tie rod with a diameter of 18.4 mm is subjected to cyclic loading. The stress range is +/- 200 kN. Figure Q3.3 shows the S-N curve of the material of which the rod is made, how many cycles will this rod survive? Stress amplitude O₂ (MPa) 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 10² 10³ 104 4340 low-alloy steel Stress ratio = -1 Fig. Q3.3 105 106 Number of cycles to failure, Nf 107 108arrow_forward
- Summarize the way in which fine-grain microstructures behave with regard to low temperature and room temperature strength and toughness. Why not make all metals as small-grained as possible?arrow_forwardExplain the effect of annealing to cold worked metal when the heating is done in range of recovery, recrystallization and grain growth stage.arrow_forwardsummarize the way in which fine_grain microstructures behave with regard to low temperature and room temperature strength and toughnesd.why not make all metals as small_grained as possible?arrow_forward
- During the recrystallization of a cold-worked material, which of the following statement(s) is (are) true? O There is some reduction in the number of dislocations. O Some of the internal strain energy is relieved. O The metal becomes more ductile, as in its precold-worked state. O Grains with high strains are replaced with new, unstrained grains. O There is a significant reduction in the number of dislocations, to approximately the number found in the precold-worked state, O The thermal conductivity is recovered to its precold-worked state. O All of the internal strain energy is relieved. O The electrical conductivity is recovered to its precold-worked state.arrow_forwardWhich method do we use to monitor dislocation movements in tensile testing? How monitoring is done in this method, explain the working mechanism of the system in detail.arrow_forwardA cold-worked brass specimen of average grain size 0.02 mm has a xield strength of 160 MPa Estimate the xield strength of this allov after it has been heat treated and the value of ky is 12.0 MPa-mm!2. (10)arrow_forward
- a) Sketch and label tensile stress-strain curves for a typical BCC and FCC metal and explain the salient differences from a slip system perspective Explain the Fick’s two laws of diffusion and discuss their common uses. What atomic factors govern the extent of solid solubility?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_forwardWhat is the driving force for recrystallization What are the stages to build up new. phasearrow_forward
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