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Which material will have higher resistance to creep? A. Polycrystalline B. Single crystal Material A has average grain size = 0.3 microns. Material B has average grain size = 200 nm. If the rest of parameters are the same, which material will have higher yield strength? Material A has Elastic modulus = 220,000 MPa. Material B has Elastic modulus = 230 GPa. Which material will have the higher resistance to creep deformation?

Which material will have higher resistance to creep? A. Polycrystalline B. Single crystal Material A has average grain size = 0.3 microns. Material B has average grain size = 200 nm. If the rest of parameters are the same, which material will have higher yield strength? Material A has Elastic modulus = 220,000 MPa. Material B has Elastic modulus = 230 GPa. Which material will have the higher resistance to creep deformation?

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Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Which material will have higher resistance to creep? A. Polycrystalline B. Single crystal Material A has average grain size = 0.3 microns. Material B has average grain size = 200 nm. If the rest of parameters are the same, which material will have higher yield strength? Material A has Elastic modulus = 220,000 MPa. Material B has Elastic modulus = 230 GPa. Which material will have the higher resistance to creep deformation? Material A has BCC crystal structure Material B has FCC crystal structure Which material will have the larger region for Coble and Nabarro creeps? The higher the stress concentration factor the higher the stress that material can withstand before fracture. (True or False?) Stress concentration factor increases with increasing crack length and decreasing crack radius. |(True or False?) Plastic zone size is larger for infinite plates. (True or False?). Infinite plates are always under plane-strain condition. |(True or False?) Plastic zone size is smaller for plane-strain condition. (True or False?) The smaller the volume of your part, the lower the stress necessary for fracture. |(True or False?) Higher Weibull modulus values reflect more homogeneous material behavior with strength levels for a given component being more predictable. | (True or False?) Engineering stress and strain take into consideration the instantaneous dimensions of the sample. (True or False?) Fracture toughness of the material can be estimated from the area under stress/strain curve (up to the fracture point). (True or False?) |The smaller the amount of slip systems, the more ductile the material is. (True or False?) Slip occurs due to dislocation movement. (True or False?)
Transcribed Image Text:Which material will have higher resistance to creep? A. Polycrystalline B. Single crystal Material A has average grain size = 0.3 microns. Material B has average grain size = 200 nm. If the rest of parameters are the same, which material will have higher yield strength? Material A has Elastic modulus = 220,000 MPa. Material B has Elastic modulus = 230 GPa. Which material will have the higher resistance to creep deformation? Material A has BCC crystal structure Material B has FCC crystal structure Which material will have the larger region for Coble and Nabarro creeps? The higher the stress concentration factor the higher the stress that material can withstand before fracture. (True or False?) Stress concentration factor increases with increasing crack length and decreasing crack radius. |(True or False?) Plastic zone size is larger for infinite plates. (True or False?). Infinite plates are always under plane-strain condition. |(True or False?) Plastic zone size is smaller for plane-strain condition. (True or False?) The smaller the volume of your part, the lower the stress necessary for fracture. |(True or False?) Higher Weibull modulus values reflect more homogeneous material behavior with strength levels for a given component being more predictable. | (True or False?) Engineering stress and strain take into consideration the instantaneous dimensions of the sample. (True or False?) Fracture toughness of the material can be estimated from the area under stress/strain curve (up to the fracture point). (True or False?) |The smaller the amount of slip systems, the more ductile the material is. (True or False?) Slip occurs due to dislocation movement. (True or False?)
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