Why are the plain carbon steels quenched in water and the alloy steels quenched in oil?
Why are the plain carbon steels quenched in water and the alloy steels quenched in oil?
Homework Answers
Water can be used to quench some kind of steels lile plain carbon steels but not alloy steels because water absorbs atmospheric gases and forms bubbles on the surface of the metal. These bubbles create soft spots and later leads to cracking. So, oil quenching is used for alloy steels.
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Why are the plain carbon steels quenched in water and the alloy
steels quenched in oil?
Why do alloy steels have greater hardenability than plain carbon steels?
Why do alloy steels have greater hardenability than plain carbon steels?
How are plain carbon steels and alloy steel important for engineering applications? Select any four plain...
How are plain carbon steels and alloy steel important for engineering applications? Select any four plain carbon steel and alloy steel each and justify your answer with respect to their composition, mechanical properties and application
Distinguish between the following three types of plain-carbon steels: a) eutectoid b) hypereutectoid, and c) hypereutectoid....
Distinguish between the following three types of plain-carbon steels: a) eutectoid b) hypereutectoid, and c) hypereutectoid. 2-
Please help! Thank you! If one has a 1060 plain carbon steel, the carbon content is...
Please help! Thank you!
If one has a 1060 plain carbon steel, the carbon content is 1.06 wt% 0.60 wt.% 60 wt.% 10.6 wt.% In general, stainless steels have high content of which of these metals? Mn Mo Cr Ba A cast iron steel has carbon content compared to a steel Less More Equal Which of these elements is not considered a noble metal As Au Ti Pt As a Boeing engineer, you are designing a new Aluminum body frame...
1.Below are stress-strain curves for 5 steels. (a) annealed low carbon steel, (b) a steel alloy...
1.Below are stress-strain curves for 5 steels. (a) annealed low carbon steel, (b) a steel alloy which has a DBTT of +50°C (c) 304 stainless steel (d) nearly pure coarse grained Fe Identify the modulus, yield stress, tensile strength, ductility, and toughness. Identify the amount of elastic strain at yield stress, tensile strength, point right before fracture, point right after fracture. 2000 -Low C steel, 1800 steel alloy, DBTT +50C 304 stainless pure Fe 1600 1400 1200 t 1000 800...
QUESTION 6 (5+5+5+5 = 20 marks) Microalloyed steels are an important class of steels used extensively...
QUESTION 6 (5+5+5+5 = 20 marks) Microalloyed steels are an important class of steels used extensively by the automotive industry. The two most important contributions to the yield strength of these alloys are the strengthening by precipitates in the form of alloy carbides and the strengthening by ferrite grain size refinement. Consider a typical Nb microalloyed alloy composition: Fe-0.1C-1Mn-0.1Nb (wt. %). These alloys are hot rolled in the austenitic condition and then air cooled from elevated temperature. Figure 1 below...
4. Two steels are being considered for manufacture of as-forged connecting rods. One is AISI 4340...
4. Two steels are being considered for manufacture of as-forged connecting rods. One is AISI 4340 Cr-Mo-Ni steel capable of being heat-treated to a tensile strength of 260 kpsi. The other is a plain carbon steel AISI 1040 with an attainable Sut of 113 kpsi. If each rod is to have a size giving an equivalent diameter de of 0.75 in., is there any advantage to using the alloy steel for this fatigue application?
Ou. 3 Chapters 10- 11: Phase Transformations/ Designations, Compositions and Typ Applications for Some Selected Steels (25%) Using the isothermal transformation diagram for an iron-carbon alloy o...
Ou. 3 Chapters 10- 11: Phase Transformations/ Designations, Compositions and Typ Applications for Some Selected Steels (25%) Using the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition 6), please, identify and name the final microstructures resulting from the two cooling curves labeled (@) and (b). (c): Draw and label on Figure 6 the cooling curve that yields the following microstructures: 50% of microstructure A (Figure 7a) and 50% of microstructure B (Figure 7b). (d) Please, provide missing information...
for the shaft shown below answer the following: 1. Find the factor of safety in point H if the shaft is made from carbon steels 1030 hot rolled and the shaft diameter is 32 mm. 2. Find the diameter of the shaft if it made from wrought-aluminum alloy 2024
for the shaft shown below answer thefollowing:1. Find the factor of safety in point H ifthe shaft is made from carbon steels1030 hot rolled and the shaftdiameter is 32 mm.2. Find the diameter of the shaft if itmade from wrought-aluminum alloy2024 heat treated and the factor ofsafety is 2.3. Select suitable carbon steel alloy forthat shaft if its diameter is 25 mmand factor of safety required is 1.5.
Given a plain carbon steel which has 8 % primary (or pro eutectoid) carbide, determine both...
Given a plain carbon steel which has 8 % primary (or pro eutectoid) carbide, determine both overall carbon content and ferrite content. Assume that the steel was at equilibrium just above the eutectoid temperature and then cooled immediately to 600ºC and held for 5 seconds, then quenched. What microconstituents would there be in the structure and how much of each? (Assume the cooling behavior follows the TTT curve shown)
Distinguish between the following three types of plain-carbon steels: a) eutectoid b) hypereutectoid, and c) hypereutectoid. 2-
Please help! Thank you!
If one has a 1060 plain carbon steel, the carbon content is 1.06 wt% 0.60 wt.% 60 wt.% 10.6 wt.% In general, stainless steels have high content of which of these metals? Mn Mo Cr Ba A cast iron steel has carbon content compared to a steel Less More Equal Which of these elements is not considered a noble metal As Au Ti Pt As a Boeing engineer, you are designing a new Aluminum body frame...
1.Below are stress-strain curves for 5 steels. (a) annealed low carbon steel, (b) a steel alloy which has a DBTT of +50°C (c) 304 stainless steel (d) nearly pure coarse grained Fe Identify the modulus, yield stress, tensile strength, ductility, and toughness. Identify the amount of elastic strain at yield stress, tensile strength, point right before fracture, point right after fracture. 2000 -Low C steel, 1800 steel alloy, DBTT +50C 304 stainless pure Fe 1600 1400 1200 t 1000 800...
QUESTION 6 (5+5+5+5 = 20 marks) Microalloyed steels are an important class of steels used extensively by the automotive industry. The two most important contributions to the yield strength of these alloys are the strengthening by precipitates in the form of alloy carbides and the strengthening by ferrite grain size refinement. Consider a typical Nb microalloyed alloy composition: Fe-0.1C-1Mn-0.1Nb (wt. %). These alloys are hot rolled in the austenitic condition and then air cooled from elevated temperature. Figure 1 below...
4. Two steels are being considered for manufacture of as-forged connecting rods. One is AISI 4340 Cr-Mo-Ni steel capable of being heat-treated to a tensile strength of 260 kpsi. The other is a plain carbon steel AISI 1040 with an attainable Sut of 113 kpsi. If each rod is to have a size giving an equivalent diameter de of 0.75 in., is there any advantage to using the alloy steel for this fatigue application?
Ou. 3 Chapters 10- 11: Phase Transformations/ Designations, Compositions and Typ Applications for Some Selected Steels (25%) Using the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition 6), please, identify and name the final microstructures resulting from the two cooling curves labeled (@) and (b). (c): Draw and label on Figure 6 the cooling curve that yields the following microstructures: 50% of microstructure A (Figure 7a) and 50% of microstructure B (Figure 7b). (d) Please, provide missing information...
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