Engineering, 10.05.2021 19:10 cyaransteenberg
Material hardness is proportional to the ductility. 2. ___ Materials that are significantly cold worked tend to have a lower recrystallization temperature. 3. ___ Ductile-brittle transition temperature (DBTT) is commonly seen in BCC metals. 4. ___ Strain hardening is a result of increased dislocation density. 5. ___ Non-ferrous metals, such as Al and Cu, do not have an endurance limit. 6. ___ Solid solution refers to a mixture of two or more metals in the liquid state. 7. ___ Eutectic alloys solidify at a constant temperature. 8. ___ All aluminum alloys can be age hardened. 9. ___ Over-aging can further strengthen the age-hardened alloys. 10. ___ Martensitic transformation is a diffusionless phase transformation. 11. ___ Hardenability and hardness refer to the same material property. 12. ___ Hardness of a heat treated steel is generally proportional to the carbon content. 13. ___ Martensitic transformation is exclusive to ferrous materials. 14. ___ Gray cast iron contains graphites in the microstructure. 15. ___ 316 stainless steel is more ductile than plain carbon steels. 16. ___ Magnesium is lighter and generally more ductile than aluminum. 17. ___ Bronze (Cu-Zn) and brass (Cu-Sn) are solid solution strengthened coppers.
Answers: 2
Engineering, 04.07.2019 18:10
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 05.07.2019 19:10
Tech a says never use a water hose to clean up dust after a repair. tech b says never use a floor scrubber to clean up dust after repairs. who is correct?
Answers: 1
Engineering, 06.07.2019 02:30
In a unit cell of fcc structure, indicate the position of one of the tetrahedral interstitial sites by plotting the corresponding tetrahedron. do the same for one of the octahedral interstitial sites (in a separate fcc unit cell). mark the positions of all the tetrahedral and octahedral interstitial sites in the unit cells. how many equivalent tetrahedral sites and how many equivalent octahedral sites are contained in a fcc unit cell, respectively. what is the coordination number for a tetrahedral site and what is the coordination number for an octahedral site?
Answers: 2
Engineering, 06.07.2019 02:30
On solidification from a melt, the polymer polyethylene forms a semi-crystalline spherulite structure. (i) sketch an individual spherulite and label the amorphous and crystalline regions. (ii) draw a schematic to show the changes in specific volume with temperature during cooling from the melt, comparing it to the theoretical extremes of fully crystalline and fully amorphous (indicate tm and tg)
Answers: 2
Material hardness is proportional to the ductility. 2. ___ Materials that are significantly cold wor...
Mathematics, 05.03.2021 23:10
Mathematics, 05.03.2021 23:10
Mathematics, 05.03.2021 23:10
English, 05.03.2021 23:10
Chemistry, 05.03.2021 23:10
Mathematics, 05.03.2021 23:10
Mathematics, 05.03.2021 23:10
Chemistry, 05.03.2021 23:10
Mathematics, 05.03.2021 23:10
Mathematics, 05.03.2021 23:10