Consider a single crystal of some hypothetical metal that has the FCC crystal structure and is oriented such that a tensile stress is applied along a [112] direction. If slip occurs on a ( 111) plane and in a [0 11] direction, and the crystal yields at a stress of 5.12 MPa, compute the critical resolved shear stress.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Consider a single crystal of some hypothetical metal that
has the FCC crystal structure and is oriented such that a
tensile stress is applied along a [11 2] direction. If slip
occurs on a ( 111) plane and in a [0 11] direction, and
the crystal yields at a stress of 5.12 MPa, compute the
critical resolved shear stress.
CRITICAL RESOLVED SHEAR STRESS
• CRITICAL RESOLVED SHEAR STRESS (T,
THE MOST FAVORABLY ORIENTED SLIP SYSTEM WHEN SHEAR STRESS IS AT
J: SLIP IN A SYSTEM STARTS ON
CRSS
THIS CRITICAL VALUE
• MINIMUM SHEAR STRESS REQUIRED TO INITIATE SLIP
• SINGLE CRYSTAL PLASTICALLY DEFORMS WHEN:
T, > T,
CRSS
OR TR(max) =T CRSS
'R
Tcrss
(cos o cos A)max
Transcribed Image Text:Consider a single crystal of some hypothetical metal that has the FCC crystal structure and is oriented such that a tensile stress is applied along a [11 2] direction. If slip occurs on a ( 111) plane and in a [0 11] direction, and the crystal yields at a stress of 5.12 MPa, compute the critical resolved shear stress. CRITICAL RESOLVED SHEAR STRESS • CRITICAL RESOLVED SHEAR STRESS (T, THE MOST FAVORABLY ORIENTED SLIP SYSTEM WHEN SHEAR STRESS IS AT J: SLIP IN A SYSTEM STARTS ON CRSS THIS CRITICAL VALUE • MINIMUM SHEAR STRESS REQUIRED TO INITIATE SLIP • SINGLE CRYSTAL PLASTICALLY DEFORMS WHEN: T, > T, CRSS OR TR(max) =T CRSS 'R Tcrss (cos o cos A)max
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