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upper critical temp. means 273k and lower temp. means -273k.now 50 deg cent. above upper cri. temp means 273+50 deg cent.(=273+323)kelvin
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What is the difference between full annealing and isothermal annealing?
Full annealing process consists of three steps. First step is heating the steel component to above upper critical temperature by 30 to 50 deg c, after suffciant soaking time parts will be cooled very slowly in the furnace. Where as for ISo Thermal annealing parts will be heated above upper critical temperature by 30 to 50 deg c, after suffciant soaking time parts will be transfered to intermediate temprature( Below the lower critical temperature) and allow to equalise the temperature then cool in air to Room temperature
What is the lowest temp that super conductors will work?
As far as I know, there is no lower limit; instead, there is an upper temperature limit, at which the material stops being a superconductor.
Why does the upper threshold of hearing get lower as you get older?
Because of your mom
Water boils at alower temperature on the hills because there is a decrease in air pressure on the hills?
Because of the rounded nature of the hills, they function very much like the upper surface of an aircraft wing when there is an airflow (wind) over them. This leads to lower pressure on the hills themselves (in an aircraft this would cause lift). This lower pressure makes it easier for for water to turn from a liquid to a gas (less energy is required for the phase change to occur) and the water boils at a lower temperature
Is there an upper limit of temperature?
In contemporary models the highest temperature is Plank Temperature equal to 1.417 X 10^32 degrees Celsius. Actually at such a temperature the differences between the temperature scales are irrelevant.
What is intercritical annealing?
Intercritical annealing is where the metal is heated to between its lower and upper critical temperature point to allow partial transformation of the matrix into austenite followed by slow cooling or holding below the lower critical temperature point.
What is the difference between full annealing and isothermal annealing?
Full annealing process consists of three steps. First step is heating the steel component to above upper critical temperature by 30 to 50 deg c, after suffciant soaking time parts will be cooled very slowly in the furnace. Where as for ISo Thermal annealing parts will be heated above upper critical temperature by 30 to 50 deg c, after suffciant soaking time parts will be transfered to intermediate temprature( Below the lower critical temperature) and allow to equalise the temperature then cool in air to Room temperature
What is the Difference between the Upper and lower yield stress in mild steel?
Lower YS is that point at which the steel flows elastically and failure takes place at upper YS.
What are the critical temperatures of iron -carbon equilibrium diagram?
At the time I'm writing this answer, I'm astudent of BSc Metallurgical & Materials Engineering and I've had a brief study of Iron-Carbon diagram recently. I hope my answer helps. The Lower Critical Temperature is 1333o F. The Upper Critical Temperature is 2066o F.
Why is there a lower limit to temperature but not an upper limit?
lower limit because the particles have zero energy. there is no upper limit because particles can move as fast as they like. There is an upper limit on temperature, called "Planck Temperature". It is approximately 1.42e32 Kelvin! This temperature is the maximum temperature something can attain, with the physics we understand.
What is lower fixed point?
upper fixed point is a temperature of stem from water boiling and standards atmospheric pressure lower fixed point is the temperature of pure melting ice.
Is the upper stratosphere colder then the lower stratosphere?
Yes, the upper stratosphere is colder than the lower stratosphere. This is because the stratosphere is heated from below by the Earth's surface, so as you move higher in the atmosphere, the temperature decreases. The temperature inversion between the lower and upper stratosphere is due to the absorption of solar radiation by ozone in the upper stratosphere.
Why are some immiscible solutions miscible after being heated?
The missibility factor is defined by Gibbs free energy . Some solutions have Upper critical solution temperatures and some of them have lower critical solution temperature. For further informations you can refer to Van Ness thermodynamics book.
What are three differences between the upper and lower mantle?
Temperature Density and Pressure
What three differences between the upper and lower mantle?
They would differ in temperature, mineralogy, density, and pressure.
What upper in Upper Normandy refer to?
opposite upper is lower Normandy.What do upper and lower refer to?
Where did horus live?
He lived some where in lower Egypt. But lower Egypt is upper Egypt because upper is lower and lower is upper.
