Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Question
Chapter 13, Problem 1CQ
To determine
The temperature at which the metal is deformed in hot work.
Expert Solution & Answer
Answer to Problem 1CQ
In hot-work, a metal is deformed at temperature that are either aboverecrystallizationor above 50% of the above absolute melting temperature.
Explanation of Solution
The processs of recrystallization happen during the hot working metals. It undergoes plastic deformation. The recrstallixation temperature is very high at which the rate of growth of new grain is accelerated and finally the metal consistsonly one grain.
The hot working operation are done in many stages. Recrysatllization is first step at which the metal is heated, and then follows the intermediate step and finally finishing step. The process does not produce any strain hardening, and that’s why there are no increse in yield strength and hardness. The ductility of final metal is high.
Thus, in hot-work, a metal is deformed at temperature that are either above recrystallization or above 50% of the above absolute melting temperature.
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a) A 14-ft. tall and12-ft.-8-in. long fully grouted reinforced masonry wall is constructed of 8-in.CMU. It is to be analyzed for out-of-plane loading. Construct thenP -nM curves for the wallwith the following three vertical reinforcement scenarios: (1) 10 No. 6 bars at 16 in. spacing,(2) 10 No. 5 bars at 16 in. spacing, and (3) 7 No. 4 bars at 24 in. spacing. The steel is Grade60 with a modulus of elasticity of 29,000 ksi, and the masonry has a compressive strength of2,000 psi. You may use Excel or Matlab to construct the curves. Also, show the maximumnPallowed by the code for each case.(b) For each of the above reinforcement scenarios, determine the maximum axial loads that arepermitted for the tension-controlled condition and transition condition.(c) Discuss how the amount of vertical reinforcement affects thenPn-Mn curve.
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a) A 14-ft. tall and12-ft.-8-in. long fully grouted reinforced masonry wall is constructed of 8-in.CMU. It is to be analyzed for out-of-plane loading. Construct thenP -nM curves for the wallwith the following three vertical reinforcement scenarios: (1) 10 No. 6 bars at 16 in. spacing,(2) 10 No. 5 bars at 16 in. spacing, and (3) 7 No. 4 bars at 24 in. spacing. The steel is Grade60 with a modulus of elasticity of 29,000 ksi, and the masonry has a compressive strength of2,000 psi. You may use Excel or Matlab to construct the curves. Also, show the maximumnPallowed by the code for each case.(b) For each of the above reinforcement scenarios, determine the maximum axial loads that arepermitted for the tension-controlled condition and transition condition.(c) Discuss how the amount of vertical reinforcement affects thenPn - Mn curve.
Chapter 13 Solutions
Materials Science And Engineering Properties
Ch. 13 - Prob. 1CQCh. 13 - Prob. 2CQCh. 13 - Prob. 3CQCh. 13 - Prob. 4CQCh. 13 - Prob. 5CQCh. 13 - Prob. 6CQCh. 13 - Prob. 7CQCh. 13 - Prob. 8CQCh. 13 - Prob. 9CQCh. 13 - Prob. 10CQ
Ch. 13 - Prob. 11CQCh. 13 - Prob. 12CQCh. 13 - Prob. 13CQCh. 13 - Prob. 14CQCh. 13 - Prob. 15CQCh. 13 - Prob. 16CQCh. 13 - Prob. 17CQCh. 13 - Prob. 18CQCh. 13 - Prob. 19CQCh. 13 - Prob. 1ETSQCh. 13 - Prob. 2ETSQCh. 13 - Prob. 3ETSQCh. 13 - Prob. 4ETSQCh. 13 - Prob. 5ETSQCh. 13 - Prob. 6ETSQCh. 13 - Prob. 7ETSQCh. 13 - Prob. 8ETSQCh. 13 - Prob. 9ETSQCh. 13 - Prob. 10ETSQCh. 13 - Prob. 11ETSQCh. 13 - Prob. 12ETSQCh. 13 - Prob. 13ETSQCh. 13 - Prob. 14ETSQCh. 13 - Prob. 15ETSQCh. 13 - Prob. 16ETSQ
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