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6. (10) For a steel alloy at 900'C, it has been determined that a carburizing heat...
3. For a steel alloy it has been determined that a carburizing heat treatment of 10...
3. For a steel alloy it has been determined that a carburizing heat treatment of 10 h duration will raise the carbon concentration to 0.45 wt% at a point 2.5 mm from the surface. Estimate the time necessary to achieve the same concentration at a 5.0 mm position for an identical steel and at the same carburizing temperature. [40]
(10 points) Problem S. For a steel alloy it has been determined that a carburizing heat...
(10 points) Problem S. For a steel alloy it has been determined that a carburizing heat treatment of 10-h ime necessary to achieve the same concentration at a 5.0-mm position for an identical steel and at the duration will raise the carbon concentration to 0.45 wt% at a point 2.5 mm from the surface. Estimate the same carburtzing temperature
Current Attempt In Progress For a steel alloy it has been determined that a carburizing heat treatment of 17...
Current Attempt In Progress For a steel alloy it has been determined that a carburizing heat treatment of 17 h duration at 700'C will raise the carbon concentration to 0.39 wt at a point 3.9 mm from the surface. Estimate the time necessary to achieve the same concentration at a 7.7 mm position for an identical steel and at a carburizing temperature of 1030°C. Assume that Dois 3.1 * 10 m/s and Q, is 103 kJ/mol. e Textbook and Media...
2.4 For a steel alloy it has been determined that a carburizing heat treatment of 5-h...
2.4 For a steel alloy it has been determined that a carburizing heat treatment of 5-h duration will raise the carbon concentration to 0.45 wt% at a point 2.5 mm from the surface. Estimate the time necessary to achieve the same concentration at a 5.0-mm position for an identical steel and at the same carburizing temperature. Dt 2 2. 2. 2.
2 a) It is given that a carburizing heat treatment of 10-hour duration of a steel...
2 a) It is given that a carburizing heat treatment of 10-hour duration of a steel alloy will raise the carbon content to 0.45 wt% at a point 2.5 mm away from the surface. Compute the time required to get the same concentration at a 5.0-mm position from the surface at the same carburizing temperature for an identical steel alloy (Hint: The diffusion coefficient will be a constant for two identical materials at a given temperature). b) What is the...
4. For a steel alloy it has been determined that a carburizing hea t treatment of...
4. For a steel alloy it has been determined that a carburizing hea t treatment of 10-h duration Wll concentration to 0.45 wt% at a point 5.5-mm from the surface. Estimate the po concentration in 6 hours (identical steel and at the Tip: The short erf(Z) table found on last page sition that will achieve the same same carburizing temperature). 5. Consider a single crystal of silver oriented such that a tensile (15) stress is applied along a [001] direction....
4. (a) Why are the steel gears case hardened? How it is done? (b) For a...
4. (a) Why are the steel gears case hardened? How it is done? (b) For a 1020 steel it has been determined that a carburizing treatment of 15 hr duration at 900 °C will raise the carbon concentration to 0.35 wt% at a point 2.0 mm from the surface. Estimate the time necessary to achieve the same carbon concentration at a 6.0 mm position from the surface for the same steel and at the same carburizing temperature.
In the carburizing process the steel piece was exposed, at an elevated temperature (900 °C), to...
In the carburizing process the steel piece was exposed, at an elevated temperature (900 °C), to an atmosphere rich in a hydrocarbon gas, such as methane CH Surface concentration of carbon is to be maintained at 1.18 wt%. Determine the time (in hours) necessary to achieve a carbon content of 0 68 wt% at a position 0.8 mm below the surface. Initial carbon concentration is 0 18 wt% Take the diffusion coefficient for carbon in iron at 900°C = 1.0...
10. A 1020 steel is carburized and a case depth of 0.25 mm is needed. The case depth is defined a...
10. A 1020 steel is carburized and a case depth of 0.25 mm is needed. The case depth is defined at the depth at which the carbon concentration is 0.6 wt%. The surface concentration during carburizing is 1.2 wt%. Determine the carburizing time needed if T = 900K. Repeat for 1050K.
10. A 1020 steel is carburized and a case depth of 0.25 mm is needed. The case depth is defined at the depth at which the carbon concentration is...
In carburizing an alloy that initially has a uniform carbon concentration of .25 wt% and is...
In carburizing an alloy that initially has a uniform carbon concentration of .25 wt% and is to be treated at 1223 K, if the concentration of carbon at the surface is suddenly brought to and maintained at 1.20 wt%, how long will it take to achieve a carbon content of 0.80 wt% at a position of 0.5 mm below the surface? The diffusion coefficient for carbon in iron at this temperature is 1.6 x 10-11 m 2 /s.
3. For a steel alloy it has been determined that a carburizing heat treatment of 10 h duration will raise the carbon concentration to 0.45 wt% at a point 2.5 mm from the surface. Estimate the time necessary to achieve the same concentration at a 5.0 mm position for an identical steel and at the same carburizing temperature. [40]
(10 points) Problem S. For a steel alloy it has been determined that a carburizing heat treatment of 10-h ime necessary to achieve the same concentration at a 5.0-mm position for an identical steel and at the duration will raise the carbon concentration to 0.45 wt% at a point 2.5 mm from the surface. Estimate the same carburtzing temperature
Current Attempt In Progress For a steel alloy it has been determined that a carburizing heat treatment of 17 h duration at 700'C will raise the carbon concentration to 0.39 wt at a point 3.9 mm from the surface. Estimate the time necessary to achieve the same concentration at a 7.7 mm position for an identical steel and at a carburizing temperature of 1030°C. Assume that Dois 3.1 * 10 m/s and Q, is 103 kJ/mol. e Textbook and Media...
2.4 For a steel alloy it has been determined that a carburizing heat treatment of 5-h duration will raise the carbon concentration to 0.45 wt% at a point 2.5 mm from the surface. Estimate the time necessary to achieve the same concentration at a 5.0-mm position for an identical steel and at the same carburizing temperature. Dt 2 2. 2. 2.
2 a) It is given that a carburizing heat treatment of 10-hour duration of a steel alloy will raise the carbon content to 0.45 wt% at a point 2.5 mm away from the surface. Compute the time required to get the same concentration at a 5.0-mm position from the surface at the same carburizing temperature for an identical steel alloy (Hint: The diffusion coefficient will be a constant for two identical materials at a given temperature). b) What is the...
4. For a steel alloy it has been determined that a carburizing hea t treatment of 10-h duration Wll concentration to 0.45 wt% at a point 5.5-mm from the surface. Estimate the po concentration in 6 hours (identical steel and at the Tip: The short erf(Z) table found on last page sition that will achieve the same same carburizing temperature). 5. Consider a single crystal of silver oriented such that a tensile (15) stress is applied along a [001] direction....
4. (a) Why are the steel gears case hardened? How it is done? (b) For a 1020 steel it has been determined that a carburizing treatment of 15 hr duration at 900 °C will raise the carbon concentration to 0.35 wt% at a point 2.0 mm from the surface. Estimate the time necessary to achieve the same carbon concentration at a 6.0 mm position from the surface for the same steel and at the same carburizing temperature.
In the carburizing process the steel piece was exposed, at an elevated temperature (900 °C), to an atmosphere rich in a hydrocarbon gas, such as methane CH Surface concentration of carbon is to be maintained at 1.18 wt%. Determine the time (in hours) necessary to achieve a carbon content of 0 68 wt% at a position 0.8 mm below the surface. Initial carbon concentration is 0 18 wt% Take the diffusion coefficient for carbon in iron at 900°C = 1.0...
10. A 1020 steel is carburized and a case depth of 0.25 mm is needed. The case depth is defined at the depth at which the carbon concentration is 0.6 wt%. The surface concentration during carburizing is 1.2 wt%. Determine the carburizing time needed if T = 900K. Repeat for 1050K.
10. A 1020 steel is carburized and a case depth of 0.25 mm is needed. The case depth is defined at the depth at which the carbon concentration is...
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