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Mohamad Afzal KhanGold

Asked: May 31, 2020In: Physical Metallurgy & Heat treatment

What is the maximum solubility of carbon in iron? Justify your answer wrt Fe-Fe3C equilibrium diagram.

Poll Results

30%Relation among steel, cast iron & pig iron ( 3 voters )

70%Limitation of Fe-Fe3C diagram ( 7 voters )

Based On 10 Votes

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Ashish lisuIron

Asked: July 8, 2021In: Welding Technology

what is the difference between TIG and other welding process and in which process heat loss will be more and why? which welding process is suitable for thin sheets welding?

Askmemetallurgy OfficialGold

Asked: June 8, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2019 Q8. During low strain rate (< or equal to 0.1 per second) deformation of a metal at room temperature, the one that deforms by twinning mode is :

Poll Results

2.38%Fe ( 1 voter )

73.81%Mg ( 31 voters )

11.9%Al ( 5 voters )

11.9%Ni ( 5 voters )

Based On 42 Votes

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Jhansi KokkiligaddaCopper

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

Please mention formulas of linear and planar densities of several directions and planes of BCC, FCC and HCP crystal structures in a table format.

Asked: April 26, 2020In: Uncategorised

Consider i add 100g of salt in 1000ml of water. After addition the weight of water change or not?

Asked: April 7, 2020In: Numericals (All papers)

Calculate the value of reactions equilibrium.

For the reactionA(aq)—B(aq)the change in the standard free enthalpy is 2.74 kJ at 25 °C and 5.23 kJ at 45 °C. Calculate the value of this reaction’s equilibrium constant at 75 °C.

For the reaction
A(aq)—B(aq)
the change in the standard free enthalpy is 2.74 kJ at 25 °C and 5.23 kJ at 45 °C. Calculate the value of this reaction’s equilibrium constant at 75 °C.

Askmemetallurgy OfficialGold

Asked: April 7, 2020In: Thermodynamics & Rate Processes

GATE MT 2016 Q3. Activation energy of a chemical reaction, homogeneous or heterogeneous, is graphically estimated from a plot between [where, k is the rate constant and T is the absolute temperature]

Poll Results

11.76%(A) k versus T ( 2 voters )

17.65%(B) 1/k versus T ( 3 voters )

17.65%(C) 1/k versus ln T ( 3 voters )

52.94%(D) ln k versus 1/T ( 9 voters )

Based On 17 Votes

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Asked: April 26, 2020In: Career/ Jobs/ Exam

Please help me with the questions inside my picture.

Please help me with the questions inside my picture.

Askmemetallurgy OfficialGold

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

GATE MT 2020 Q3. Select the correct spectra (shown on a log-log scale on the figures) for emission from a gray surface and a black body, both maintained at 1000 K.

GATE MT 2020 Q3. Select the correct spectra (shown on a log-log scale on the figures) for emission from a gray surface and a black body, both maintained at 1000 K.

Poll Results

12.24%A ( 6 voters )

14.29%B ( 7 voters )

18.37%C ( 9 voters )

55.1%D ( 27 voters )

Based On 49 Votes

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Asked: June 6, 2021In: Iron & Steel Making

Why do we use dolomite during slag splashing? It has a lot of CaO content in it, but we just worried about the MgO content, so can there be an alternative for dolomite?

Askmemetallurgy OfficialGold

Asked: June 17, 2020In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2018 Q4. In froth flotation, the primary purpose of adding collectors is to:

Poll Results

61.11%(A) make the surface of the mineral hydrophobic. ( 55 voters )

18.89%(B) make the surface of the mineral hydrophilic. ( 17 voters )

18.89%(C) stabilize the froth. ( 17 voters )

1.11%(D) adjust the pH. ( 1 voter )

Based On 90 Votes

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[email protected]Iron

Asked: April 20, 2020In: Uncategorised

if i want to make 3% W, 3%Nb, 2% V, 2%Mo based complex carbide hardfacing material then how much percenatge i have to add in flux to get desired percentage of elements?