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Hakuna matata
Hakuna matataIron
Asked: May 5, 2020In: Uncategorised

Why metals lose strength at high temperatures ?

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Vikas Tiwari
Vikas Tiwari
Asked: May 22, 2020In: Career/ Jobs/ Exam

SAIL’s Bhilai Plant has exported 40,000 tonnes of cast billets to China since April. China being one of largest steel producer importing from India. Can someone through some light. Why?

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: May 9, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2020 Q24. Radius of the largest interstitial atom that can be accommodated in an octahedral void in BCC iron without distorting the lattice is ______ nm( round off to three decimal places). Assume hard sphere model and radius of Fe atom as 0.124 nm.

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Jhansi Kokkiligadda
Jhansi KokkiligaddaCopper
Asked: May 24, 2020In: Physical Metallurgy & Heat treatment

Explain why? Metals are ductile but Ionic solids are brittle.

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Gaurav Kumar
Gaurav KumarGold
Asked: May 6, 2020In: Physical Metallurgy & Heat treatment

Why small amount of thoria is doped into tungsten filament wire that used for light bulb

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Asked: April 2, 2020In: Mechanical Metallurgy

GATE MT 2015 Q33. Which of the following Mohr’s circles of a plane-stress condition corresponds to equi-biaxial tension?

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18.82%(B) Q ( 16 voters )
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43.53%(D) S ( 37 voters )
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GATE MT 2015 Q33. Which of the following Mohr’s circles of a plane-stress condition corresponds to equi-biaxial tension?
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Asked: March 6, 2021In: Aptitude

GATE MT 2021 Q5. The front door of Mr. X’s house faces East. Mr. X leaves the house, walking 50 m straight from the back door that is situated directly opposite to the front door. He then turns to his right, walks for another 50 m and stops. The direction of the point Mr. X is now located at with respect to the starting point is

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Askmemetallurgy Official
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Asked: April 8, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2016 Q16.

The Burger’s vector of a dislocation in a cubic crystal (with lattice parameter a) is a/2 [110]and dislocation line is along [112] direction. The angle (in degrees) between the dislocation line and its Burger’s vector is         ...Read more

The Burger’s vector of a dislocation in a cubic crystal (with lattice parameter a) is a/2 [110]and dislocation line is along [112] direction. The angle (in degrees) between the dislocation line and its Burger’s vector is               .

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Asked: May 8, 2020In: Thermodynamics & Rate Processes

GATE MT 2020 Q18. When 1 mole of C3H8 at 300 K is burnt with stoichiometric amount of oxygen at 300 K to form CO2 and H2O. The adiabatic flame temperature is 5975 K. If C3H8 is burnt under the same conditions but with excess oxygen,then adiabatic flame temperature will be

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62.79% Lower than 5975 K irrespective of the amount of excess oxygen. ( 27 voters )
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GATE MT 2020 Q18. When 1 mole of C3H8 at 300 K is burnt with stoichiometric amount of oxygen at 300 K to form CO2 and H2O. The adiabatic flame temperature is 5975 K. If C3H8 is burnt under the same conditions but with excess oxygen,then adiabatic flame temperature will be
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Prasad Madake
Prasad MadakeCopper
Asked: July 2, 2020

Sugest a book to study selection of material…?

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: June 23, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2018 Q35

Pure iron transforms from body centered cubic (BCC) to face centered cubic (FCC) crystal structure at 912 °C. If the lattice parameter of the BCC phase is 0.293 nm and that of the FCC phase is 0.363 nm, the associated ...Read more

Pure iron transforms from body centered cubic (BCC) to face centered cubic (FCC) crystal structure at 912 °C. If the lattice parameter of the BCC phase is 0.293 nm and that of the FCC phase is 0.363 nm, the associated volume change is ______ (in % to one decimal place).

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Asked: March 16, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2011 Q43. Which one of the following reactions in fcc/bcc Crystal’s with lattice parameter a is energetically favourable?

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GATE MT 2011 Q43. Which one of the following reactions in fcc/bcc Crystal’s with lattice parameter a is energetically favourable?
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