User Account

All Pages

ENGINEERING SCIENCE, Other Engineering

Assignment Help:
QUESTION 7
As a forensic materials expert – you have been asked to identify a metallic powder found on the clothing of someone suspected of fabricating an incendiary device used in an armed robbery.
The suspect suggests that the powder is tungsten – which he uses a lot in his line of work. The police believe that the powder is part of a chromium/silver/nickel mixture often used in such devices. Armed with the following information from an X-ray powder diffraction analysis – what can you conclude?
Using Cu ka radiation of 0.1542nm, three large diffraction peaks were observed at 44.4°, 64.6° and 81.7°.

QUESTION 9 – Crystallographic transformation
On cooling from the molten state, titanium solidifies into a BCC lattice structure. However, on cooling to below 880°C, a change occurs whereby the crystal structure transforms into an HCP structure. Assuming the number of atoms remains constant and that the lattice parameters are as shown below, calculate the volume change associated with this transformation.
For the BCC lattice: a = 3.32Å
For the HCP lattice: a = 2.956 Å and c = 4.683 Å
Titanium is a commonly used metal in engineering structures. Explain why your findings above should be cause for concern if these engineering structures are to be used at high temperatures.

Related Discussions:- ENGINEERING SCIENCE

Flight control - transfer function models, Transfer Function Models Cor...

Transfer Function Models Corresponding to each linear state space equation in the time domain with input u(t) and output y(t) is a matrix of transfer functions relating the Lap

Dischage rate, stuck on a project that requires 5 outputs with 6 inputs and...

stuck on a project that requires 5 outputs with 6 inputs and all formulas

Various cementing materials, The various cementing materials are classified...

The various cementing materials are classified as follows. a) Argillaceous cementing materials b) Calcareous cementing materials c) Carbonaceous cementing materials Argillaceous Ma

..introduction to networking, Explain bus topology and peer to peer network...

Explain bus topology and peer to peer network concepts

Lamination of plastics, Q. Write short note on laminating.           ...

Q. Write short note on laminating.                                                 OR    Explain the Laminating processes.

bootstrap sweep circuit, working of bootstrap sweep circui

working of bootstrap sweep circuit

Time motion study, how to create a chart of time motion study

how to create a chart of time motion study

Angle rate systems , Traditionally, seekers have been simple correlation tr...

Traditionally, seekers have been simple correlation trackers and a set of gimbals that are used to measure the angle rates of the target.          - Infrared seekers detect a

Tin smelting, How can calculate for charging of tin smelting with reverbera...

How can calculate for charging of tin smelting with reverberatory furnaces?

Earth Summit, please tell me in detail that what is earth summit??????????

please tell me in detail that what is earth summit??????????

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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