Determine the mass concentration of carbon

Assignment Help Civil Engineering
Reference no: EM13560312

A mild steel component in a form of a finite slab with a thickness of 2L=2.5 mm is to be hardened by packing it in a carbonaceous material in a furnace for a predetermined time. the uniform initial carbon concentration of the slab is 0.15 percent by mass. the component is now packed in carbonaceous material on both sides and is placed in a high temperature furnace. the diffusion coefficient of carbon in steel at the furnace temperature is given to be constant at 4.8x10^-10 m^2/s, and the equilibrium concentration of carbon in the iron at the interface is determined from the equilibrium data to be 1.2 percent by mass.

If the component is kept in the furnace for 30 minutes, determine the mass concentration of carbon 0.5 mm below the surface.

Reference no: EM13560312

Questions Cloud

Defines the the importance of brand : Defines the The Importance of Brand
Compute the total tax they would pay as unmarried individual : John Adams has a $65,000 adjustable gross income from Apple Corp. and allowable itemized deductions of $7200. Mary Eve has a $75,000 adjustable gross income and $2000 of allowable itemized deductions.
Determine the force in the hydraulic cylinder and the pin : Assume the section has cracked and use the transformed area method to compute their flexural stresses for the load. Given: Beam 30 ft long with uniform load of 2 k/ft and a point load of 30 k at 10 ft. Cross section b=16 in h=36 in with 6 #9 rebars l..
The right to refuse workplace hazards has a fundamental : The right to refuse workplace hazards has a fundamental conflict with the ability of a business to operate effectively (if employees refuse to work there can be no production).How should these competing interests be balanced?Support your position wit..
Determine the mass concentration of carbon : A mild steel component in a form of a finite slab with a thickness of 2L=2.5 mm is to be hardened by packing it in a carbonaceous material in a furnace for a predetermined time
Discuss the three challenges that strategists face today : Discuss the three challenges that strategists face today
The situation of the conflict between bp and greenpeace : The situation of the conflict between BP and greenpeace
Make a preliminary selection of member size : The service loads on a steel truss member are PDL: 120 kips (tension), PLL =240 Kips (tension), PWL = 200 kips (tension/compression). Steel properties are Fy = 46 ksi, Fu = 58 Ksi. Using the tables in the AISC manual, make a preliminary selection of ..
Calculate the weight percent austenite and weight : A .90% Carbon hypereutectoid plain carbon steel is slowly cooled from 900 degrees C to just slighty above 723 degrees C calculate the weight percent proeutectoid cementite and weight percent austenite present in the steel.

Reviews

Write a Review

Civil Engineering Questions & Answers

  What will be the monthly power bill at electricity costs

Water is pumped 9 mi from a reservoir at elevation 100 ft to a second reservoir at elevation 210 ft. The pipeline connecting the reservoirs has a 54-in diameter. It is concrete and has an absolute roughness of 0.003.

  Find an expression for the flowrate and average velocity

Water flows steadly in an open topped channel of rectangular cross section. The channel width is B and the depth of the water is D. The flow is designed using a rectangular coordinate system whose orgin is at the free surface midway

  Determine the planer density and packing faction for fcc

determine the planer density and packing faction for FCC nickel in (100), (110), and (111 planes. which, if any, of these planes is close-packed

  Determine the reaction at a and b by a pin

Three loads are applied to a beam. the beam is supported by a roller at A and by a pin at B. neglecting the weight of the beam, determine the reaction at A and B when P=15kips.

  Calculate what is the current value of grannys savings

Granny viola has been saving money in the Bread and Butter mutual fund for 15 years . She has been a steady depositor over those years and has a pattern of putting $100 into the account every 3 months.

  Equilibrium temperature of the two bodies

What is the final equilibrium temperature of the two bodies?

  Determine the total force needed to overcome axle friction

A 100-ton train traveling on a horizontal track requires 400 hp to maintain a constant speed of 50 mi/h. Determine (a) the total force needed to overcome axle friction, rolling resistance, and air resistance

  Which would require less wood and by what percentage

An engineer is to design a channel lined with planed wood to carry 2 m3/s of water on a given slope. The channel cross section can be either a 90 degree triangle or a square. Which would require less wood and by what percentage

  Determine what minimum value of coefficient of traction

A wheel tractor-scraper is operating on a level grade, assuming no power derating is required for equipment conditions, altitude, and temperature.

  Compute radius of second curve stationing of the prc

The distance from the point of intersection of the tangents to the PI of the second curve is 100m while the stationing of the PI of the first curve is 10+432.24.If the radius of the curveis 285.40 m,

  When the local mean time at los angeles

The longitude of Albany, New York, is +73 degrees 44' 49" and the longitude of Los Angeles, California, is +118 degrees 10' 44". When the local mean time at Los Angeles is 10h 41m 00s a.m., the local mean time at Albany is

  How many moles of water condense per cubic meter of feed gas

Suppose a sample of the 90 °C air is put in a closed variable-volume chamber containing a mirror, and the pressure is raised at constant temperature until a mist forms on the mirror. At what pressure would the mist form

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd