You have a SAE 1020 material that you austenize and then rapid quench the final phase would be a Martensite b. Pearlite e Bainite d. BCT e. BCC 54. A SAE 1077 material that is slow quench from the from 1650F will have a crystal structure of a Martensite b. Pearlite C. BCC d. BCT e. Ferrite & Cementite 55. How long do you temper an alloy steel a Until you get the properties you want b. 2 hours c. 20 hours d. 20 minutes e. Depends on the material there all different 56. Refer to the following chart. What is the tempering temperature to achieve a yield strength of 200ksi in a 4140 material a. 400 b. 600 c. 800 d. 1000 e. 1200 EWhat is its percent elongation a. 0

You have a SAE 1020 material that you austenize and then rapid quench the final phase would be a Martensite b. Pearlite e Bainite d. BCT e. BCC 54. A SAE 1077 material that is slow quench from the from 1650F will have a crystal structure of a Martensite b. Pearlite C. BCC d. BCT e. Ferrite & Cementite 55. How long do you temper an alloy steel a Until you get the properties you want b. 2 hours c. 20 hours d. 20 minutes e. Depends on the material there all different 56. Refer to the following chart. What is the tempering temperature to achieve a yield strength of 200ksi in a 4140 material a. 400 b. 600 c. 800 d. 1000 e. 1200 EWhat is its percent elongation a. 0

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

T or F -In the hypereutectoid steel alloy, the primary phase is Cementite ( iron carbide ) -In the Pb-Sn hypoeutectic alloy, the primary phase is the α-phase -The eutectic composition of the solder alloy is 98%wt Sn -In the steel alloys, the weight percent of the alloying elements affects the eutectoid temperature and Ceutectoid wt%C -Austenite phase has a BCC crystal structure The microstructure is characterized by: a.The number of phases present b.The present phases’ proportions. c.How these phases are arranged or distributed d.all of the answers
a: Quench to from 800oC to 350oC and hold for 102 seconds:b: Quench the alloy to room temperaturec: Reheat the alloy to 700oC and hold for 105 seconds
a: Quench to from 800oC to 650oC and hold for 10 seconds:b: Next, quench the alloy to approximately 350oC and hold for 102 secondsc: Next, quench the alloy to approximately 175oC and hold for 10 secondsd: Finally, quench the alloy to room temperature
Iron carbon phase diagram extends up to 6.7% carbon only, why? (Mention two reasons)Single line text.
T or F -The α-phase is rich in iron. -The cementite phase is rich in iron -Pearlite steel has a lamellar microconstituent -AISI 1018 is a hypoeutecoid steel alloy -The Co of a hypoeutectic alloy is more than CE -Eutectoid means eutectic-like -Eutectic alloy means easy melting
1.50% Pearlite, 50% Tempered Martensite 2.50% Bainite, 45% Martensite, 5% Austenite
11.15) Make a copy of the isothermal transforma- tion diagram for an iron-carbon alloy of eutectoid composition (Figure 11.14) and then sketch and label on this diagram time- temperature paths to produce the following microstructures: (a) 100% coarse pearlite. (b) 100% tempered martensite. (c) 50% coarse pearlite, 25% bainite, and pearl- 25% martensite.
2/. text _________ is the structure produced by the rapid quenching of high carbon steel. a. Austenite b. Martensite c. Cementite d. Ferrite
Kindly help me with all ??????? How does the tempering process effect hardness and ductility of the metal? a) hardness and ductility both increase b) hardness and ductility both decrease c) hardness decreases and ductility increases d) hardness increases and ductility decreases What is the minimum % Carbon in steel that allows significant quench-hardening? a) .03% b) .08% c) 0.3% d) 0.8% Which of the following is the highest hardness reading? a) 30 HRC b) 50 HRC c) 70 HRB d) 90 HRBI Initial focusing of the reflective light microscope is done with a) a low magnification lens and the field diaphragm open b) a low magnification lens and the field diaphragm closed c) a high magnification lens and the field diaphragm open d) a high magnification lens and the field diaphragm closed Tempering of a plain carbon steel is defined as a) rapid quenching of the annealed metal b) cold working of the annealed metal c) reheating the austenitized and quenched metal to an intermediate temperature d)…
fill in the blanks The eutectic point is the lowest melting point which can be seen on the iron-carbon equilibrium phase diagram at ___________ percent carbon. The eutectoid point means the lowest transformation temperature in a solidified alloy. On the iron-carbon equilibrium phase diagram the eutectoid point is at _________percent carbon. true or false What happens to a quench-hardened tool or machine part that was not tempered when it is subjected to shock loads or bending stress? It is not supposed to be tempered because once it is tempered, it will be brittle. True False
Explain the influence of structure and composition on material properties using a PhaseDiagram What is the Iron-Carbon phase diagram?
136) What alloying elements are found in the AM series magnesium alloy?a) Mnb) Agsteald) Zne) Pb 137) Which is not one of the alloying elements used in steel production? a) Molybdenumb) Aluminumc) Manganesed) Chromiume) Vanadium 138) Which one is needed to produce perforated parts using casting technique?a) lower degreeb) high degreec) spadesd) runnere) feeder