Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Chapter 9, Problem 9.13P
To determine
The primary creep
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Two samples of a metal with an elastic modulus of 130 GPa, diameter 10 mm, and gauge
length 100 mm undergo creep at 600°C according to the table below:
a) Calculate the extension due to elastic deformation for each sample.
b) Calculate the steady state creep rate for each sample.
c) Creep occurs according to:

Describe the term “creep” and the effect of temperature and stress on creep.
An 8-mm thick steel tank has an outside diameter of 600 mm. It is subjected to an internal pressure of 2.40 MPa.
Which of the following gives the circumferential stress in the tank?
Which of the following gives the longitudinal stress in the tank?
If the allowable design stress in the wall is 125 MPa, which of the following most nearly gives the maximum internal pressure in the tank?
Chapter 9 Solutions
Materials Science And Engineering Properties
Ch. 9 - Prob. 1CQCh. 9 - Prob. 2CQCh. 9 - Prob. 3CQCh. 9 - Prob. 4CQCh. 9 - Prob. 5CQCh. 9 - Prob. 6CQCh. 9 - Prob. 7CQCh. 9 - Prob. 8CQCh. 9 - Prob. 9CQCh. 9 - Prob. 10CQ
Ch. 9 - Prob. 11CQCh. 9 - Prob. 12CQCh. 9 - Prob. 13CQCh. 9 - At temperatures above the equi-cohesive...Ch. 9 - Prob. 15CQCh. 9 - Prob. 16CQCh. 9 - Prob. 17CQCh. 9 - Prob. 18CQCh. 9 - Prob. 19CQCh. 9 - Prob. 20CQCh. 9 - Prob. 21CQCh. 9 - Prob. 22CQCh. 9 - Prob. 23CQCh. 9 - Prob. 24CQCh. 9 - Prob. 25CQCh. 9 - Prob. 26CQCh. 9 - Prob. 27CQCh. 9 - Prob. 28CQCh. 9 - Prob. 29CQCh. 9 - Prob. 30CQCh. 9 - Prob. 31CQCh. 9 - Prob. 32CQCh. 9 - Prob. 33CQCh. 9 - Prob. 34CQCh. 9 - Prob. 35CQCh. 9 - Prob. 1ETSQCh. 9 - Prob. 2ETSQCh. 9 - Prob. 3ETSQCh. 9 - Prob. 4ETSQCh. 9 - Prob. 5ETSQCh. 9 - Prob. 6ETSQCh. 9 - Prob. 7ETSQCh. 9 - Prob. 8ETSQCh. 9 - Prob. 9ETSQCh. 9 - Prob. 10ETSQCh. 9 - Prob. 11ETSQCh. 9 - Prob. 12ETSQCh. 9 - Prob. 9.1PCh. 9 - Prob. 9.2PCh. 9 - Prob. 9.3PCh. 9 - Prob. 9.4PCh. 9 - Prob. 9.5PCh. 9 - Prob. 9.6PCh. 9 - Prob. 9.7PCh. 9 - Prob. 9.8PCh. 9 - Prob. 9.9PCh. 9 - Prob. 9.10PCh. 9 - For silver at a tensile stress of 7 MPa and a...Ch. 9 - For germanium at a tensile stress of 410 MPa and a...Ch. 9 - Prob. 9.13PCh. 9 - Prob. 9.14PCh. 9 - Prob. 9.15PCh. 9 - Prob. 9.16PCh. 9 - Prob. 9.17PCh. 9 - Prob. 9.18PCh. 9 - Prob. 9.19PCh. 9 - Prob. 9.20PCh. 9 - Prob. 9.21PCh. 9 - Prob. 9.22P
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- For silver at a tensile stress of 7 MPa and a temperature of 839C , there are two equally contributing creep mechanisms. What are they?arrow_forwardAt temperatures above the equi-cohesive temperature, the creep mechanism of grain boundary ____________ is observed.arrow_forwardConsider 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, will an applied stress of 45 MPa cause the single crystal to yield or slip? If not, what stress will be necessary?arrow_forward
- What are the consequences of strain hardening on ductility? Discuss the influence of strain-hardening on fatigue behavior.arrow_forwardExplain the properites of the different types of deformations (elastic, plastic, steady-state creep and transient creep). Hint: Mention properties related to the following; time dependency, ability of recovering deformations, microstructural changes during deformationarrow_forwardA creep test is done on a cylindrical part with an initial diameter of 100mm and length of 500mm. a) At the stress of 50 MPa and a temperature of 675 degrees celsius, the steady-state creep rate is 3.2E-4 % per hour. Find the primary creep elongation and the steady-state creep elongation after 2200 hours, given that the creep deformation at that time is 5.6 mm. b) when the temperature is increased to 875 degrees celsius, the steady-state creep rate increases to 4.6E-4 % per hour. Assming the activation energy stays the same in this temperature range, calculate the activation energy in kJ/mol.arrow_forward
- How do you calculate whether a material with a 0.5 sq cm cross section is suitable to withstand temperatures of 2000F and tensile forces of 10kN if the material has a creep strength of 500MPa at 1400F? Show the calculations.arrow_forwardDetermine the outside diameter of a hallow steel tube that will carry a tensile load of 500 KN at a stress of 140 MPa. Assume the wall thickness to be one-tenth of the outside diameter.arrow_forwardThe principal stresses in the wall of a container are 40 MN/mm² and 80 MN/mm². The normal makes an angle of 30° with a direction of maximum principal stress. The resultant stresses in the plane will be ?arrow_forward
- A piece of paper 20cm wide, 15cm long, and 1mm thick is being applied with force on both ends along its width. Determine the stress in the paper.arrow_forwardA steel cylinder is 160 mm ID and 320 mm OD. If it is subject to an internal pressure of 150 MPa, determine the tangential stress on the outside layer.arrow_forward
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