If 1080 steel was heated to 1000 degree and then aircooled in the room temperature, 1080...

If 1080 steel was heated to 1000 degree and then aircooled in the room temperature, 1080 steel has lower strength, what additional heat treatment do you recommend to gain strength? Explain in terms of microstructure theory why this is the case. How else could we change our material to increase strength? Explain in terms of microstructural theory why this is the case

Expert Solution

If we have air cooled the 1080 steel then as air cooling itself suggest that the rate of cooling is not very high and the grains of steel get enough time to grow bigeer and bigger which is called as GRAIN GROWTH. When grains grow bigger then they will result in coarse grain structure. And strength of a material having coarse grain structure is always less than the material having fine grain structure. To improve the strength we normally do the process commonly known as GRAIN SIZE REFINEMENT. In this process we convert coarse grain structure to fine grain structure to achieve higher strength. We can also increase the strength by providing water cooling or any cooling in which rate of cooling is comparatively high than air cooling. Because when the rate of cooling of very high then grains won't get enough time to grow and will be converted into a fine grain structure resulting in higher strength.

samet mamat answered 2 years ago

A gallon of water is heated-up from room temperature (20oC) to its boiling temperature of 100...

A gallon of water is heated-up from room temperature (20oC) to its boiling temperature of 100 oC at atmospheric pressure. The water is further heated and completely transforms into vapor at which point the heating is stopped. What is the temperature of the steam? A)T=100oC B) T > 100 oC C) T < 100 oC

Q : It is desired to maintain the temperature of hospital room at 24 degree centigrade...

Q : It is desired to maintain the temperature of hospital room at 24 degree centigrade at all the time . The size of the room is 12x12 having 2 ton Air conditioner and 1200 watt heater. A) discuss proper mechanism so that the temperature should not exceed 24 degree centigrade at any condition ( Hot or cold weather ). B) suggest and draw a block diagram for temperature control system for hospital room

By slow-cooling the austenite to room temperature, steel can increase strength. (a) How is it possible?...

By slow-cooling the austenite to room temperature, steel can increase strength. (a) How is it possible? (b) Explain the possible mechanisms of strengthening

100. mL of H2O is initially at room temperature (22.0∘C). A chilled steel rod at 2.0∘C...

100. mL of H2O is initially at room temperature (22.0∘C). A chilled steel rod at 2.0∘C is placed in the water. If the final temperature of the system is 21.1 ∘C, what is the mass of the steel bar? Specific heat of water = 4.18 J/g⋅∘C Specific heat of steel = 0.452 J/g⋅∘C Express your answer numerically, in grams, to one significant figure.

A sphere of iron is heated up to 1000° C. Once heated, it has a radius...

A sphere of iron is heated up to 1000° C. Once heated, it has a radius of 1 cm. Now suppose that we take the same 1000° C iron sphere and plunge it into a thermally insulated container with 1kg of 0° C ice. Calculate the temperature of the contents of the container once they have come to thermal equilibrium. Additional information: • The density of iron is 7.874 g/cm3. Assume that this density does not depend on temperature. •...

Your dorm room is heated by a steam radiator. The room is 10 ft x 10...

Your dorm room is heated by a steam radiator. The room is 10 ft x 10 ft and has an 8 ft. ceiling. The room has a single pane glass window with dimensions 2 ft. wide and 3 ft. high. If the room is 25 °C and the outside temperature is -5 °C, how much steam (in grams per minute) must condense to maintain this temperature at steady state? Assume the steam is saturated at 125 °C and transfers only...

Boil water in a bowl and cool in a room. The air temperature in the room...

Boil water in a bowl and cool in a room. The air temperature in the room is increasing linearly according to the function Ta (t) = 22 + 0.015t (t in minutes, T in ° C). Assume that Newton's Law of Cooling is satisfied: the rate of change of water temperature is proportional to the difference between the temperature of the water and the temperature of the environment. We take the water temperature after 8 minutes and find that it...

Peas Rate of respiration Germinating, room temperature 296.1 Non-germinating, room temperature 2.122 Germinating, cool temperature 252.8...

Peas Rate of respiration Germinating, room temperature 296.1 Non-germinating, room temperature 2.122 Germinating, cool temperature 252.8 1. Compare the respiration rate among various types of seeds. 2. Compare the respiration rate among seeds that have germinated for different time periods, such as 1, 3 and 5 days

If we want to only use frozen water (ice) and room temperature water (room temperature water...

If we want to only use frozen water (ice) and room temperature water (room temperature water of four times the mass of the ice), write out the various forms of heat transfer that will occur between frozen water and room temperature water, when the come into contact. Hint: There will be one term of heat transfer from the room temperature water, and three terms of heat transfer in the ice/cold water.

initial temperature = 24.3 degree celcuis final temperature = 35.7 degree celcuis 50.0 ml of 0.740...

initial temperature = 24.3 degree celcuis final temperature = 35.7 degree celcuis 50.0 ml of 0.740 M phospheric acid +50.0ml of 2.00M of sodium hydroxide change in temperature = 11.4 degree celcius calculate the following 1- what is the mass mixture in thecup ? 2-heat flowof the system in cup in KJ? 3- heat of system in cup (qrxn)in KJ? 4-initial moles of H3PO4 in the cup? 5- initial moles of NaOH in the cup? 6-delta H rxn in KJ(experimental)?...

Question