EBK MANUFACTURING PROCESSES FOR ENGINEE
6th Edition
ISBN: 9780134425115
Author: Schmid
Publisher: YUZU
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Chapter 3, Problem 3.7Q
To determine
The difference between recovery and recrystallization.
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Establish the most salient distinctions between cold, hot and below recrystallization temperature work.
Briefly cite the differences between the recovery and recrystallization processes.
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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 is the driving force for recrystallization What are the stages to build up new. phasearrow_forwardThe 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 10-2arrow_forwardYou are given 1) the normal to the slip plane and the normal to the slip direction angle with the tensile axis, 2) the critical resolved shear stress, and 3) applied stress. How would you determine whether the given applied stress will cause the single crystal to yield?arrow_forward
- 8) 2.Recrystallization is followed by decrease in strength and hardness. Select one: True Falsearrow_forwardSubcritical annealing can be done at higher temperature than full annealing. Select one: True Falsearrow_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
- Why recovery, recrystallization and grain growth are required after plastic deformation of a metal. Explain these process.arrow_forwardNote: Kindly give me both right answers. A) Did the ductile materials (annealed and aluminium) react differently to the two different testing methods (hardness test vs. tensile test)? What does this say about the behaviour of ductile materials in compression vs. tension? B) Did the brittle material (quenched) react differently to the two different testing methods (hardness test vs. tensile test)? What does this say about the behaviour of brittle materials in compression vs. tension? (Three to five sentence answers are good)(engineering material)arrow_forwardSubcritical annealing can be done at lower temperature than full annealing. Select one: True Falsearrow_forward
- A cold worked Al-alloy component takes 200 minutes to recrytallize at 250 °C but takes 14 minutes at 276 °C. How long will the recrystallization take place at 320 °C. Can you cold work or strain harden this component at 320 °C? Why? Note: recrystallization time shows Arrenius type temperature dependence: trec = Bexp(-EA) kI where B is constant, k is Boltzmann's constant and E is activation energy. A bronze component has the composition 94wt.%Cu-6wt.%Sn. Calculate its resistivity (6), and thermal conductivity (x).arrow_forwardThe figure shows two work pieces of steel of 0.3 %C and 1.3 %C with different dimensions. compare between them regarding the diagram that shows the stages of softening annealing treatments. Subject: Metallurgyarrow_forwardRegarding annealing, choose the right answer (One or more): The actual annealing time must be long enough to allow for any necessary transformation reactions that may occur Annealing can be performed to release internal stresses of the material The main purpose of annealing is to decrease or restore material's ductility Time isn't a significant parameter in annealing process If the rate of temperature change is too great, temperature gradients and internal stresses may be induced that may lead to warping or even crackingarrow_forward
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