複選題

10. Which solid is isotropic if its structure is
(A) amorphous,
(B) HCP,
(C) FCC,
(D) polycrystalline, and
(E) BCC.

11. Which one is not belong to interfacial defects? (A) grain boundaries, (B) phase boundaries, (C) twin boundaries, (D) external surfaces, and (E) point defect

12. Which beam does not suit for using in a diffractometer for the determination of crystal structures? (A) electron, (B) infrared ray, (C) x-ray, (D) neutron, and (E) none of the above.

13. The plastic deformation appeared on the ductility of a metal is often (A) at a high degree, (B) very little, (C) not occurred, (D) dependent, and (E) all of the above

14. During recovery, the dislocations in the solid may be at the condition of (A) motion, (B) a high-energy configuration, (C) the increase of density, (D) transition to another type, and (E) all of the above.

15. What is the driving force for steady-state diffusion? (A) concentration gradient, (B) concentration, (C) electrical properties of materials, (D) diffusion coefficient, and (E) applied electric field.

16. What is the consideration for making integrated circuit interconnects normally by aluminum but not by copper, silver, or gold that have higher electrical conductivities? (A) diffusion, (B) melt temperature of metals, (C) cost price, (D) metal strength, and (E) metal ductibility.

17. The proportional limit in the stress-strain curve is the initial departure from linearity happens at (A) the fracture point of materials, (B) the range of elastic deformation, (C) the point of phase transformation, (D) the point of yielding, and (E) the melting point.

18. The smaller grains in metal materials may increase the material strength because (A) grain boundaries is the barrier for dislocation motion, (B) grain boundary may change the dislocation's direction of motion, (C) grain boundary may make the discontinuity of slop planes, (D) smaller grains have more grain boundaries, and (E) all of the above.

複選題19. The process of fatigue failure is characterized by the steps including (A) initial crack forms at the forced point once the load is applied, (B) the advancing creak from the initial stage has reached a critical size during the stress cycle, (C) the crack propagation is stopped by the plastic formation due to the interaction of dislocations, (D) increasing temperature owning to stress cycle melts the bend location, and (E) all of the above.

20. The most significant factor that affects the type of bonds of materials is (A) material chemistry, (B) material physics, (C) electronic configuration (D) Fermi level, and (E) atomic attractive force.

110年 - [非官方正解]110 國立中央大學_碩士班招生考試_機械工程學/製造與材料組(一般生)：材料科學(金屬材料)#125250

110年 - 110 國立高雄大學_碩士班招生考試_化學工程及材料工程學系：材料科學導論#102934

110年 - 110 國立臺灣大學_碩士班招生考試_部分系所:材料科學(A)#100703

109年 - [非官方正解]109 國立高雄大學_碩士班招生考試_化學工程及材料工程學系：材料科學導論#103100