HW-4

Hi could u help me with this homework question. I will give good ratings if u answer within 2hrs.

show the work by steps. only HANDWRITTEN answer needed ( NOT TYPED)

Question 7

One metal sample is hot worked 40%; a second sample is hot worked 50%; a third sample is cold worked 40%; a fourth sample is cold worked 50%.  Select all of the following that are true.   Group of answer choices The 40% hot worked sample would have the highest tensile modulus. The two cold worked samples would have the highest tensile modulus and the cold worked moduli are equal. The 50% cold worked sample would have the highest tensile modulus. The 50% hot worked sample would have the highest tensile modulus. The 40% cold worked sample would have the highest tensile modulus. The two hot worked samples would have the highest tensile modulus and the hot worked moduli are equal. The tensile modulus of all the samples would be about the same.

5.) Two previously undeformed specimens of the same metal are to be plastically deformed by reducing their cross-sectional areas. One has a circular cross section, and the other is rectangular; during deformation the circular cross section is to remain circular, and the rectangular is to remain as such. Their original and deformed dimensions are as follows: Rectangular (тm) Circular (diameter, mm) 20 x 50 Original dimensions Deformed dimensions 18.0 15.9 13.7 x 55.1 Which of these specimens will be the hardest after the plastic deformation? a) The deformed circular specimen will be harder b) The deformed rectangular specimen will be harder c) Both will have the same hardness d) Both would brake e) No estimation can be made for such process

A 2.0-inch diameter 4140 steel bar is austenized and tempered in oil without Agitation, determine the resulting hardness at 0.6 inches below the surface, present all the Procedure to arrive at the answer (include sketch of the piece and graph used with steps Using word forms)

which is correct? 53.2 mm , 1.1 mm , 121.4 mm, 22.2 mm ,11.1 mm

Tag question Consider the graph below for 3 metals which have been cold-worked. From the graphs, which of the following statements are true? Stress Select one or more: a. C. Strain & A e. B C b. B and C have similar hardness; C has greater brittleness B is softer than C and has nearly similar ductility A is harder than C and is more ductile d. A and B have similar hardness; A has greater brittleness A is harder than C and is less ductile f. B is harder than C but has nearly similar ductility 5 up i A C

Which one is the correct answer please? Thank you

Need correctly.

We wish to produce a 0.3 inch thick plate of 3105 aluminum having a tensile strength of at least 25,000 psi and an elongation of at least 5%. The original thickness of the plate is 3 inches. The maximum cold work in each step is 85%. Which of the following procedures would achieve the correct final properties (more than one answer is possible!)?   Group of answer choices Hot work from 3 in to 0.7 in; cold work from 0.7 in to 0.3 in Cold work from 3 in to 0.7 in; do an anneal to recrystallize the material; cold work from 0.7 in to 0.3 in Cold work from 3 inches to 0.3 inches Cold work from 3 in to 0.7 in; cold work from 0.7 to 0.5 in; do an anneal to recrystallize the material; cold work from 0.5 in to 0.3 in Hot work from 3 in to 0.5 in; do an anneal to recrystallize the material; hot work from 0.5 to 0.3 in Hot work from 3 in to 0.7 in; do an anneal to recrystallize the material; hot work from 0.7 to 0.3 in Cold work from 3 in to 0.5 in; do an anneal to recrystallize the…

Sample 1 and 2 are identical except that one of them is a pure metal and the other has a small percentage alloying addition.

Question has been attached in a photo format, explanation not needed, just give the correct answers. I appreicate your time and help. thank you