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Askmemetallurgy

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Askmemetallurgy Latest Questions

AakashSingh
AakashSinghCopper
Asked: June 2, 2021In: Physical Metallurgy & Heat treatment

Sketch the phase diagram of A and B, showing the phases present in each area of the diagram.

In a binary system of A and B the melting temperature of pure A is 1050°C and the melting temperature of pure B is 1900°C. At 1250°C, the α solid solution (containing 50% of B), the β solid solution (containing ...Read more

In a binary system of A and B the melting temperature of pure A is 1050°C and the melting temperature of pure B is 1900°C. At 1250°C, the α solid solution (containing 50% of B), the β solid solution (containing 80% of B) and liquid (containing 30% of B) are in three phase equilibrium. At room temperature, the maximum solubility of B in the α phase is 30% and the maximum solubility of A in the β phase is 10%. Sketch the phase diagram of A and B, showing the phases present in each area of the diagram. What is the reaction that takes place at 1250°C?

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AakashSingh
AakashSinghCopper
Asked: March 10, 2021In: Mechanical Metallurgy

What is Dislocation and it’s types?

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AakashSingh
AakashSinghCopper
Asked: July 8, 2020In: Physical Metallurgy & Heat treatment

What is overheated and Burnt steel?

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AakashSingh
Poll
AakashSinghCopper
Asked: June 30, 2020In: Metal Working (Forming)

Gray iron is usually welded by:

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Poll Results

50%Gas Welding ( 16 voters )
18.75%Arc Welding ( 6 voters )
18.75%Resistance Welding ( 6 voters )
12.5%TIG Welding ( 4 voters )
Based On 32 Votes

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AakashSingh
AakashSinghCopper
Asked: June 11, 2020In: Mechanical Metallurgy

For creep which will be more effective, Dispersion hardening or precipitation hardening and why?

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AakashSingh
AakashSinghCopper
Asked: June 8, 2020In: Numericals (All papers)

Find out the shaft diameter.

A varying torque of 30 kN m to 80 kN m is applied to the end of a shaft. The shaft material has a yield strength of 30 MPa and the endurance limit (S’e) of 250 MPa with derating factors ...Read more

A varying torque of 30 kN m to 80 kN m is applied to the end of a shaft. The shaft material has a yield strength of 30 MPa and the endurance limit (S’e) of 250 MPa with derating factors ka =0.85, kb = 0.82, kc = 0.6. Notch sensitivity q=0.9 and stress concentration factors kt= 1.39. Find out the shaft diameter. Take factor of safety (FOS)=1.6.

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AakashSingh
AakashSinghCopper
Asked: May 28, 2020In: Physical Metallurgy & Heat treatment

What microstructure do you expect in the following cases?

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What microstructure do you expect in the following cases?
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AakashSingh
AakashSinghCopper
Asked: May 28, 2020In: Thermodynamics & Rate Processes

What is the meaning of F (P, V, T)=0 in thermodynamics?

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What is the meaning of F (P, V, T)=0 in thermodynamics?
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AakashSingh
AakashSinghCopper
Asked: May 27, 2020In: Iron & Steel Making

Do we remove Sulphur from hot metal in Blast Furnace in industry? What we do to control sulphur in final products in industry?

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AakashSingh
AakashSinghCopper
Asked: May 27, 2020In: Physical Metallurgy & Heat treatment

Why in TTT below and above the nose higher time need to start transition?

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AakashSingh
AakashSinghCopper
Asked: May 27, 2020In: Physical Metallurgy & Heat treatment

Why Banite does not form in CCT?

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AakashSingh
AakashSinghCopper
Asked: May 24, 2020In: Mechanical Metallurgy

Which property increases or decreases in fine grain and coarse grain and why?

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AakashSingh
AakashSinghCopper
Asked: May 24, 2020In: Corrosion

why mild steel has lower susceptibility to crevice corrosion than stainless steel?

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AakashSingh
AakashSinghCopper
Asked: May 23, 2020

Why we use cryolite in aluminum extraction process?

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AakashSingh
AakashSinghCopper
Asked: May 22, 2020In: Mechanical Metallurgy

Why does upper yield point come first than lower yield point in stress-strain curve for low carbon steel? please give the detailed concept.

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Why does upper yield point come first than lower yield point in stress-strain curve for low carbon steel? please give the detailed concept.
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AakashSingh
AakashSinghCopper
Asked: May 21, 2020In: Mechanical Metallurgy

why material fractures below yield point in fatigue?

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AakashSingh
AakashSinghCopper
Asked: May 21, 2020In: Mechanical Metallurgy

Why there is no Yield point phenomena in case of eutectoid steel?

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AakashSingh
AakashSinghCopper
Asked: May 19, 2020In: Foundry Technology (Metal Casting)

What factors are important to consider for riser designing in a general casting?

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AakashSingh
AakashSinghCopper
Asked: May 18, 2020In: Iron & Steel Making

Can anyone give exact condition required for Desulphurisation, dephosphorisation & desiliconisation?

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AakashSingh
Poll
AakashSinghCopper
Asked: May 2, 2020In: Welding Technology

Two blocks of same metal are to be welded. The configuration that will undergo the least distortion after welding is….

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Two blocks of same metal are to be welded. The configuration that will undergo the least distortion after welding is….

Poll Results

16.39%A ( 10 voters )
13.11%B ( 8 voters )
24.59%C ( 15 voters )
45.9%D ( 28 voters )
Based On 61 Votes

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AakashSingh
Poll
AakashSinghCopper
Asked: May 2, 2020In: Physical Metallurgy & Heat treatment

Driving force for grain growth after completion of recrystallization is

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Poll Results

33.73%stored energy of cold work ( 28 voters )
12.05%vacancy Concentration ( 10 voters )
13.25%dislocation density in the crystal ( 11 voters )
40.96%grain boundary curvature ( 34 voters )
Based On 83 Votes

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AakashSingh
AakashSinghCopper
Asked: April 29, 2020In: Physical Metallurgy & Heat treatment

Why does temper embrittlement occur in steel?

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AakashSingh
AakashSinghCopper
Asked: April 28, 2020In: Career/ Jobs/ Exam

How to start reading thermodynamics from basic to advance?

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AakashSingh
AakashSinghCopper
Asked: April 28, 2020In: Career/ Jobs/ Exam

What is the job opportunity as a metallurgical engineer in SSC?

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AakashSingh
AakashSinghCopper
Asked: April 24, 2020In: Uncategorised

What is electron valance compound?

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