EXAM1b - W ritey oura nswerso P roblems n t his H andout! t...

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Write your answers to Problems on this Handout! See Last Page for equations and other needed infol Tear this off as a reference. (12011 00 Totaf Points) 3-1 (1 0 points) EXAM #1 (B) MSEG 302 3115/06 Name= L{ p V I Deterrnine the Miller Indices of the Planes: (oc\ (,{%) Draw and index 2 planes tha t are crystallographically equivalent to the shaded plane in A. Use the blank unit cell to draw the planes and list their respective Miller indices below. Index the drawn directions in the cubic unit cells ,0, I F 0, \, ,r.r= ( , l,')a rz (z t -r- \ zr) ) olo tl t'ra_ (),0,o Tgt
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P'llq ?"t33 4-1 (10 pts) Why is the theoretical strength of metals much higher than that observed experimentally? Dlslocations QauSa slip. Slip Qxphins *hy *l^{- sh^cg+1,, oS rta4o\ 5 is rnttc,h lourer *ho,n +14- valuz p*dickA -&o^ -l-{"* rxrTc,ltlL bond ff Shp oCcars , on\y a -hny {r^c*on t{ a\\ rnet^lli. bor.A s arcos s *tq i a1<rlau rrnzA + b. bno he" a{ ^ny ore- +'& ar.rdr -tae {o-.e ref ut re-L -l- fu{" rv>1 +l.e- rvta*qt i S S rnq ll. 4-2 (10 pts) a) what are the three general types of imperfections or defects in a crystalline material? b) Discuss each type. %in+ De{ac+S: Ldhich inclrn&s,s vqcq^cius/ i^J<rs*i+-J4t alo-^s o^d 3"bs{i{Lr-{-to"'ol a\orns, in +^drc-e. CorrtpresS; bLq 6. k'a1ila- 5 fro,; €iq.\df {h"t distarrb +{& crhrnic qrrqnerru^4s i^ -lt"s Sunaadinj cry s*a\ . As a rLSt lf. drss loco*i.n s ."r,nol- eas,ly t,p r", *le_ vq.cini{y o{ poiot drA"{< e^} fl.",**-* oi *a" ,oro{etli( ma{<r l/t i t !:;".^.^i* rwra -vLL> r'x' b lr?r5-lrt u' sc,r{crc- D"i:"* :::?Hs*nain &nnta,ri u. ?rca,acino ?rqi.' i ee in *u^Fs +k c,hoq,.,t + ":m:;-:^:j^, h-eaL^sa dtss roc'Hoa t cqn not -e4.ily ar,p in *',a vqcini+y o{ point dr-te+s a..A{ta- sf^en6Jr{^ J ;*1-'rt;g r.^aro)^, is iaapalprr. Line De{e .*s (0. Dit\o.o-h;-il 1 b},{^ a srco is appri€r +o a ne'tqr\iL '.n^k"ic\ /hcuts ano\ c^uses a 'rq1^\lie rrnargrq\ +o €r^, ?3L
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5-2 (10 pts) A lmm thick by 10 cm x 10 cm sheet of iron is used to contain nitrogen in a heat exchanger at 1200C. The concentration on the inside is :15 x 10E N2 atoms/cm3, The outside concentration is 1 x 108 atom/cm3. Assume that the heat exchanger has been
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This note was uploaded on 02/01/2012 for the course MSEG 302 taught by Professor Snively during the Spring '08 term at University of Delaware.

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EXAM1b - W ritey oura nswerso P roblems n t his H andout! t...

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