M4D1_Sollenberger

A and b pls

In an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation? Select one: a.120.5 MPa, no   b.140.5, no c.129.5, yes d.123.5 MPa, yes   e.133.5 MPa, yes

In an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation? Select one: a. 140.5, no Ob. 129.5, yes OC. 120.5 MPa, no O d. 133.5 MPa, yes O e. 123.5 MPa, yes

In an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation?

In an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation? Select one: a. O b. 129.5, yes C. 133.5 MPa, yes e. 120.5 MPa, no d. 140.5, no 123.5 MPa, yes

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(a) Briefly describe at least five methods to increase the strength of materials. (b) What are the metallurgical/processing techniques employed to enhance the creep resistance of metal alloys? (c) Cite three variables that determine the microstructure of an alloy. (d) What are the most common types of crystal defects and how do they affect properties? (e) Briefly describe the phenomenon of coring and why it occurs.

You are given three metal test samples, with the same chemical composition and differing grain sizes: A: 5.0, B: 10.0 and C: 20.0 microns. Samples A and B have been tested and have yield stresses of 142.4 MPa and 135.8 MPa (all numbers are rounded off to the 1st decimal point). Based on this information, which of the following values do you think will be the closest to the yield stress of Sample C? In calculating the answer, use the Hall-Petch relation between yield stress of a metal o vield and the grain size of the metal d, which is Oyield = 00 + kd¬1/2 where k and og are constants. (This question has only one correct answer) а. 100.6 MPa b. 131.1 MPa С. 152.4 MPa O d. 115.8 MPa е. 128.1 MPa

You are given three metal test samples, with the same chemical composition and differing grain sizes: A: 5.0, B: 10.0 and C: 20.0 microns. Samples A and B have been tested and have yield stresses of 142.4 MPa and 135.8 MPa (all numbers are rounded off to the 1st decimal point). Based on this information, which of the following values do you think will be the closest to the yield stress of Sample C? In calculating the answer, use the Hall-Petch relation between yield stress of a metal ovield and the grain size of the metal d, which is Oyield = 00 + kd¯1/2 where k and og are constants. (This question has only one correct answer) a. 128.1 MPa O b. 115.8 MPa О с. 100.6 MPa O d. 131.1 MPa Ое. 152.4 MPa

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Schottky Defect Frenkel Defect Name four methods used for strengthening of metals. What is the common principle that these methods rely on to make a metal stronger. 2. For the data given below a) Calculate the number-average molecular weight of polypropyl carbon are 1.008 and ns? Atomic weights of hydrogen and

A researcher is working on aluminum bronze alloy to be used as a pump. During production of the alloy, the researcher quenched and tempered the product. Will the fracture toughness of this product be high or low? Would you expect the resistance of the alloy to crack nucleation differ from resistance to crack growth? Briefly discuss

-SC Show Attempt History Current Attempt in Progress Consider 6.8 kg of austenite containing 0.43 wt% C, cooled to below 727°C (1341°F). (a) What is the proeutectoid phase? (b) How many kilograms each of total ferrite and cementite form? (c) How many kilograms each of pearlite and the proeutectoid phase form? See Animated Figure 9.24 Part 1 Part 2 How many kilograms of total ferrite and cementite form? (a) ma = kg (b) mFe, C 1 i Save for Later Q = i F1 2 W F2 #3 kg 80 F3 E 4 000 000 F4 R % F5 T MacBook Pro < 6 A Attempts: 0 of 5 used 6 Y & 7 AA F7 U *

Which material has the larger work hardening exponent?