Examp le Given: a FCC crystal held in tension F//[215 Determine: 1. Single slip system 2. Rule of rotation 3. r and orientation at the onset of duplex of slip 4. Rule of rotation during duplex slip 5. Final orientation, i. e. the state position
Example: Given: a FCC crystal held in tension ∥ Determine: 1. Single slip system 2. Rule of rotation 3. and orientation at the onset of duplex of slip 4. Rule of rotation during duplex slip 5. Final orientation, i.e. the state position F [215]
Solution slip system:(1 11)[0111 2. locus: F tend to[o11,R‖F×[011R[211 3.L=l+b(l·n)b let 1=[/ v3 6-a\1 7=[215] [nvw]=[215]+U([215 [111]、[011 [215]+√6U01 L=-2+0=-2p=-1-√6U=-2 F'∥[226]∥[13 duplex slip systems:(1111011+(111[101
1. slip system: 2. locus: F tend to , ∥ ∥ 3. ( 111)[ 0 1 1 ] [ 0 1 1 ] R F [ 0 1 1 ] R [211 ] 2 [011] 3 [111] [2 15]( ) = = = = + l n b L l l n b 6 66 2 0 2 1 6 2 [2 15] 6 [011] 2 [01 1] ) 3 [1 11] [ ] [2 15] ([2 15] let [ ] = = − + = − = − − = − = = + = + = wu v uvwl uvw F // [ 2 2 6 ]// [ 1 1 3 ] duplex slip systems : (111)[ 011]+ (111)[101] Solution:
4.R=R1+R2=[10 5. stable: F: u'v'wT R1=[nw×101R2=[avw]×[011 When R=R+R2=[000] stable and no rotation
4. 5. stable: [110] R = R1 + R2 = F : [u v w ] [ ] [101] [ ] [011] R1 = u v w R2 = u v w When R = R1 + R2 =[000] stable and no rotation