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Questions (19)

The homogenized Al-Mg alloy is suddenly quenched and held isothermally:A) From 400C to 250C B) From 400C to 200C How long would
1. 0 answers
2. 488 views
At room temperature, do metals have a noticeably higher heat capacity than insulators because of the mobile electrons?
1. 0 answers
2. 610 views
What predictions does the so-called Dulong-Petit law make about the heat capacity of a solid and its temperature dependence (and
1. 0 answers
2. 547 views
Explain the meaning and use of periodic boundary conditions to describe the properties of finite solids.
1. 1 answer
2. 496 views
Why is the movement of the atoms in the chain the same when multiples of 2pi/a are added to, or subtracted from, the wave
1. 0 answers
2. 377 views
What does it look like for two atoms per unit cell? Why does one speak of optical and acoustic branches?
1. 0 answers
2. 417 views
Explain the phenomenon of work hardening.
1. 0 answers
2. 350 views
The yield stress of a solid estimated from a simple calculation is often much higher than the observed yield stress. Explain
1. 0 answers
2. 353 views
Young's modulus can be estimated from the microscopic force constants between atoms(or the other way round). Why and how? (*)
1. 0 answers
2. 403 views
How do the stress/strain curves look for a typical ductile and brittle material?
1. 0 answers
2. 430 views
How can an elastic deformation of a crystal be described microscopically and why would you expect Hooke's law to hold for a
1. 0 answers
2. 608 views
What happens typically when a crystal is exposed to a small stress?
1. 0 answers
2. 569 views
How can you use the reciprocal lattice of a crystal to predict the pattern ofdiffracted X-rays?
1. 2 answers
2. 496 views
What is the difference between the Bragg and von Laue descriptions of X-raydiffraction?
1. 2 answers
2. 541 views
How can you determine the structure of crystals?
1. 2 answers
2. 439 views
How can the reciprocal lattice conveniently be used to describe lattice-periodic functions?
1. 2 answers
2. 781 views
Why do covalent crystals typically have a much lower packing density thanmetal crystals?
1. 4 answers
2. 1,353 views
What are typical crystal structures for metals and why?
1. 2 answers
2. 647 views
What does the phonon dispersion, that is, the vibrational frequency asa function of wave vector 𝜔(k), look like for an
1. 2 answers
2. 673 views

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