{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HW6_MS115a

# HW6_MS115a - MS 115a Problem Set#6 assigned due 1 List and...

This preview shows pages 1–2. Sign up to view the full content.

MS 115a, Problem Set #6 assigned 11/2/11 due 11/7/11 1. List and describe three (not more!) strengthening mechanisms used to enhance the mechanical properties of metals. 2. Suppose you have a single crystal of a cubic close-packed metal which is known to have a critical resolved shear stress of 61.8 MPa. (a) Find the largest normal stress that could be applied to a bar of this material in the [1 1 2] direction before dislocations begin to move in the [ 1 0 1] direction in the (1 1 1) plane. (b) Now let this be a body centered cubic metal with slip system [1 1 1]( 1 0 1). Find the largest normal stress that could be applied in the [1 1 2] direction. 3. (a) Calculate the critical resolved shear stress in a crystal if a stress of 265 MPa in the [1 0 0] direction is required to move a dislocation in the [1 1 1 ] direction on the (1 0 1) plane. (b) Is this a BCC or CCP metal? Why? 4. The yield stress of an aluminum alloy is 132 MPa. A specimen has a diameter of 0.01 m and a length of 0.10 m.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 2

HW6_MS115a - MS 115a Problem Set#6 assigned due 1 List and...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online