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

FSE, A W12x40 beam is heated to 760°C. Answer the following questions. Wh...

A W12x40 beam is heated to 760°C. Answer the following questions. What is the W/D factor for sprayed protection? What is the W/D factor for box type protection? What is the spe

Firing order, FIRING ORDER If in multi cylinder engines, various cyli...

FIRING ORDER If in multi cylinder engines, various cylinders are made to fire one after the other, interference between adjacent cylinders would occur, since these may have o

Timber, seasoning of timber

seasoning of timber

Secondary operations in powder metallurgy methods, Q. What are the secondar...

Q. What are the secondary operations we apply in powder metallurgy methods. Give their use also. Ans. Secondary Processes of Manufacture : In addition to the basic proce

Clipping circuit, Disadvantage of shunt diode clipper

Disadvantage of shunt diode clipper

Health care finance basic tool for nonfinancial managers, based on your man...

based on your managemet style or your personal perspective, discuss how you developed your viewpoint how it will influence the way you manage, and what challenges you migt face if

bootstrap sweep circuit, working of bootstrap sweep circui

working of bootstrap sweep circuit

Aviation legislation - air operator''s certificate (aoc), Air Operator's Ce...

Air Operator's Certificate (AOC) A Company operating an aircraft for the purpose of Public Transportation, within the UK, must have an AOC granted to the company, in accordance

Drowsiness detection Device using image processing (Matlab), Hi. I am a fin...

Hi. I am a final year student seeking help with my project. I am supposed to make a device that can detect the eye state of a person to determine whether he/she is sleepy/drowsy, P

Found ash content, determine the ash content in given sample

determine the ash content in given sample

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: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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