ME215 Exam 2 Study Guide Questions
With Correct Answers
- cCORRECT cANS✔✔
Annealing c- cCORRECT cANS✔✔- cCooling cin cfurnace
- cCost ceffective cand ctime cconsuming
- cThe cfurnace cimposes ccooling cconditions cat call clocations
- cResult cin cidentical cstructures cand cproperties
Normalizing c- cCORRECT cANS✔✔- cCooling cin cair
- cCooling cwill cbe cdifferent cin cdifferent clocations
- cProperties cwill cvary cbetween cthe csurface cand cinterior
Process cAnneal c- cCORRECT cANS✔✔- cCooling cin cair
Recrystallization cAnneal c- cCORRECT cANS✔✔- cRecrystallization cis cinduced cafter ca
cmaterial chas cbeen ccold cworked cto creduce cstrain chardening ceffects
- cInduces ca cchange cin csize, cshape cand cdistribution
Stress-Relief cAnneal c- cCORRECT cANS✔✔- cReduces cresidual cstresses
- cMaterials care cheated cand cthen cslow ccooled
- cMicrostructures cand cmechanical cproperties cremain cunchanged
Spheroidizing cAnneal c- cCORRECT cANS✔✔- cSlow ccooling
- cFor chigh ccarbon cmaterials
Heat cTreatment c- cCORRECT cANS✔✔- cA cprocess cof ccontrolled cheating cand
ccooling cof cmaterials cfor cthe cpurpose cof caltering ctheir cstructures cand cproperties,
cwhich cchanges cin cphysical cand cmechanical cproperties ccan cbe cintroduced cwith cno
cchange cin cproduct cshape
Processing cheat ctreatments care cused cto... c- cCORRECT cANS✔✔- cincrease cstrength
- cprepare cthe cmaterial cfor cfabrication
- cimprove cmachining ccharacteristics
- creduce cforming cforces
- crestore cductility cfor cfurther cprocessing
,Heat cTreatments cfor cNonferrous cMetals c- cCORRECT cANS✔✔Three cpurposes
- cProduce ca cuniform, chomogenous cstructure
- cProvide ca cstress crelief
Induce crecrystallization
Solid-Solution cStrengthening c- cCORRECT cANS✔✔Substitutional csolutions cor
cinterstitial csolutions
Strain cHardening c- cCORRECT cANS✔✔Increases cstrength cby cplastic cdeformation
Grain cSize cRefinement c- cCORRECT cANS✔✔Metals cwith csmaller cgrains ctend cto cbe
cstronger
Precipitation chardening cor cAge chardening c- cCORRECT cANS✔✔Strength cis
cobtained cfrom ca cnonequilibrium cstructure
Dispersion cHardening c- cCORRECT cANS✔✔Dispersing csecond-phase cparticles
cthrough ca cbase cmaterial
Phase ctransformations c- cCORRECT cANS✔✔Heated cto cform ca csingle cphase cat can
celevated ctemperature cand csubsequently ctransform cto cone cor cmore clow
ctemperature cphases cupon ccooling c(austenite c-> cmartensite)
Precipitation cHardening c- cCORRECT cANS✔✔- cMost ceffective cmechanism cto
cstrengthen cnonferrous cmetals
- cNon-equilibrium cheat ctreatment cprocedure
Process cof cPrecipitation cHardening c- cCORRECT cANS✔✔Three-step cSequence:
csolution ctreatment c-> cquench c-> caged
Coherency c- cA cCoherent cPrecipitate c- cCORRECT cANS✔✔The ccrystallographic
cplanes cof cthe cparent cstructure care ccontinuous cthrough cthe cprecipitate ccluster, cand
cthe csolute caggregate ctends cto cdistort cthe clattice cto ca csubstantial csurrounding
cregiong
Non-Coherency c(Overage) c- cCORRECT cANS✔✔Second cphase cparticles chave ctheir
cown ccrystal cstructure cand cdistinct cinterphase cboundaries
Overaging c- cCORRECT cANS✔✔The cdecrease cin chardness cand cstrength cof
cprecipitation cor cage chardened cmaterials
Aging cStep c- cCORRECT cANS✔✔Divide cprecipitation-hardening cmaterials cinto ctwo
ctypes: cnatural caging cmaterials c(ages cat croom ctemperature) cand cartificial caging
cmaterial c(requires celevated ctemperature cto cproduce caging)
, Tempering c- cCORRECT cANS✔✔To csacrifice cstrength cand chardness cfor cductility
cand ctoughness
Age cHardening c- cCORRECT cANS✔✔To csacrifice ctoughness cand cductility cfor
cstrength
Continuous cCooling cTransformations c(CCT) c- cCORRECT cANS✔✔The cmodification
cof cttt cdiagram, cshows cthe cphase cand ccomposition cof csteels cupon ccooling cas
cfunctions cof ctemperature cand ctime
Jominy cTest c- cCORRECT cANS✔✔The chardenability ctest c- ca cmaterial cis cheated
cand cquenched cfrom cone cend, cthen chardness calong cthe cmaterial clength cis
cdetermined
Carbon cContent c- cCORRECT cANS✔✔The clarger ccarbon ccontent cthe chigher
cstrength, cthe chigher chardness
Alloy cAdditions c- cCORRECT cANS✔✔Related cto cthe camounts cand ctypes cof calloying
celements; cPrimary creason cto cadd can calloying celement cis cto cincrease chardenability
Quench cMedia c- cCORRECT cANS✔✔Quenchants care cthe cmedium cin cwhich ca
cmaterial cis cquenched
Stages cof cQuenching c- cCORRECT cANS✔✔Formation cof cthe cvapor cjacket c->
cNucleate cboiling cphase c-> cConduction cand cconvection
Quenchant cConsideration c- cCORRECT cANS✔✔- cWater cis can ceffective cquenching
cmedium cbecause cof cits chigh cheat cof cvaporization cand crelatively chigh cboiling cpoint
- cBrine cis csimilar cto cwater cas ca cquenchant cmedium
- cOil cis cutilized cif cslower cquenching crates care cdesired
- cWater cbased cpolymer cquenchants chave cproperties cbetween coil cand cwater cand
cbrine
- cOther cslow ccooling cquenchants: cMolten csalt cbaths, ccooling cin cair, cbury cthe chot
cmaterial cin csand, cetc.
Residue cStress c- cCORRECT cANS✔✔- cExist cin ca cpart cindependent cof can capplied
cstress
- cUndesirable cresidual cstresses cresult cin ccracking, cwarping, cdimensional cchanges
Causes cof cdimensional cchanges cduring cheat ctreatment c- cCORRECT cANS✔✔-
cThermal cexpansion cduring cheating cand cthermal ccontraction cduring ccooling
- cVolume cexpansion cand ccontraction
Ways cto cprevent cquench ccracking cand cresidual cstresses c- cCORRECT cANS✔✔-
cMore cuniform ccross-sectional carea
- cGenerous cfillets cat cinterior carea
With Correct Answers
- cCORRECT cANS✔✔
Annealing c- cCORRECT cANS✔✔- cCooling cin cfurnace
- cCost ceffective cand ctime cconsuming
- cThe cfurnace cimposes ccooling cconditions cat call clocations
- cResult cin cidentical cstructures cand cproperties
Normalizing c- cCORRECT cANS✔✔- cCooling cin cair
- cCooling cwill cbe cdifferent cin cdifferent clocations
- cProperties cwill cvary cbetween cthe csurface cand cinterior
Process cAnneal c- cCORRECT cANS✔✔- cCooling cin cair
Recrystallization cAnneal c- cCORRECT cANS✔✔- cRecrystallization cis cinduced cafter ca
cmaterial chas cbeen ccold cworked cto creduce cstrain chardening ceffects
- cInduces ca cchange cin csize, cshape cand cdistribution
Stress-Relief cAnneal c- cCORRECT cANS✔✔- cReduces cresidual cstresses
- cMaterials care cheated cand cthen cslow ccooled
- cMicrostructures cand cmechanical cproperties cremain cunchanged
Spheroidizing cAnneal c- cCORRECT cANS✔✔- cSlow ccooling
- cFor chigh ccarbon cmaterials
Heat cTreatment c- cCORRECT cANS✔✔- cA cprocess cof ccontrolled cheating cand
ccooling cof cmaterials cfor cthe cpurpose cof caltering ctheir cstructures cand cproperties,
cwhich cchanges cin cphysical cand cmechanical cproperties ccan cbe cintroduced cwith cno
cchange cin cproduct cshape
Processing cheat ctreatments care cused cto... c- cCORRECT cANS✔✔- cincrease cstrength
- cprepare cthe cmaterial cfor cfabrication
- cimprove cmachining ccharacteristics
- creduce cforming cforces
- crestore cductility cfor cfurther cprocessing
,Heat cTreatments cfor cNonferrous cMetals c- cCORRECT cANS✔✔Three cpurposes
- cProduce ca cuniform, chomogenous cstructure
- cProvide ca cstress crelief
Induce crecrystallization
Solid-Solution cStrengthening c- cCORRECT cANS✔✔Substitutional csolutions cor
cinterstitial csolutions
Strain cHardening c- cCORRECT cANS✔✔Increases cstrength cby cplastic cdeformation
Grain cSize cRefinement c- cCORRECT cANS✔✔Metals cwith csmaller cgrains ctend cto cbe
cstronger
Precipitation chardening cor cAge chardening c- cCORRECT cANS✔✔Strength cis
cobtained cfrom ca cnonequilibrium cstructure
Dispersion cHardening c- cCORRECT cANS✔✔Dispersing csecond-phase cparticles
cthrough ca cbase cmaterial
Phase ctransformations c- cCORRECT cANS✔✔Heated cto cform ca csingle cphase cat can
celevated ctemperature cand csubsequently ctransform cto cone cor cmore clow
ctemperature cphases cupon ccooling c(austenite c-> cmartensite)
Precipitation cHardening c- cCORRECT cANS✔✔- cMost ceffective cmechanism cto
cstrengthen cnonferrous cmetals
- cNon-equilibrium cheat ctreatment cprocedure
Process cof cPrecipitation cHardening c- cCORRECT cANS✔✔Three-step cSequence:
csolution ctreatment c-> cquench c-> caged
Coherency c- cA cCoherent cPrecipitate c- cCORRECT cANS✔✔The ccrystallographic
cplanes cof cthe cparent cstructure care ccontinuous cthrough cthe cprecipitate ccluster, cand
cthe csolute caggregate ctends cto cdistort cthe clattice cto ca csubstantial csurrounding
cregiong
Non-Coherency c(Overage) c- cCORRECT cANS✔✔Second cphase cparticles chave ctheir
cown ccrystal cstructure cand cdistinct cinterphase cboundaries
Overaging c- cCORRECT cANS✔✔The cdecrease cin chardness cand cstrength cof
cprecipitation cor cage chardened cmaterials
Aging cStep c- cCORRECT cANS✔✔Divide cprecipitation-hardening cmaterials cinto ctwo
ctypes: cnatural caging cmaterials c(ages cat croom ctemperature) cand cartificial caging
cmaterial c(requires celevated ctemperature cto cproduce caging)
, Tempering c- cCORRECT cANS✔✔To csacrifice cstrength cand chardness cfor cductility
cand ctoughness
Age cHardening c- cCORRECT cANS✔✔To csacrifice ctoughness cand cductility cfor
cstrength
Continuous cCooling cTransformations c(CCT) c- cCORRECT cANS✔✔The cmodification
cof cttt cdiagram, cshows cthe cphase cand ccomposition cof csteels cupon ccooling cas
cfunctions cof ctemperature cand ctime
Jominy cTest c- cCORRECT cANS✔✔The chardenability ctest c- ca cmaterial cis cheated
cand cquenched cfrom cone cend, cthen chardness calong cthe cmaterial clength cis
cdetermined
Carbon cContent c- cCORRECT cANS✔✔The clarger ccarbon ccontent cthe chigher
cstrength, cthe chigher chardness
Alloy cAdditions c- cCORRECT cANS✔✔Related cto cthe camounts cand ctypes cof calloying
celements; cPrimary creason cto cadd can calloying celement cis cto cincrease chardenability
Quench cMedia c- cCORRECT cANS✔✔Quenchants care cthe cmedium cin cwhich ca
cmaterial cis cquenched
Stages cof cQuenching c- cCORRECT cANS✔✔Formation cof cthe cvapor cjacket c->
cNucleate cboiling cphase c-> cConduction cand cconvection
Quenchant cConsideration c- cCORRECT cANS✔✔- cWater cis can ceffective cquenching
cmedium cbecause cof cits chigh cheat cof cvaporization cand crelatively chigh cboiling cpoint
- cBrine cis csimilar cto cwater cas ca cquenchant cmedium
- cOil cis cutilized cif cslower cquenching crates care cdesired
- cWater cbased cpolymer cquenchants chave cproperties cbetween coil cand cwater cand
cbrine
- cOther cslow ccooling cquenchants: cMolten csalt cbaths, ccooling cin cair, cbury cthe chot
cmaterial cin csand, cetc.
Residue cStress c- cCORRECT cANS✔✔- cExist cin ca cpart cindependent cof can capplied
cstress
- cUndesirable cresidual cstresses cresult cin ccracking, cwarping, cdimensional cchanges
Causes cof cdimensional cchanges cduring cheat ctreatment c- cCORRECT cANS✔✔-
cThermal cexpansion cduring cheating cand cthermal ccontraction cduring ccooling
- cVolume cexpansion cand ccontraction
Ways cto cprevent cquench ccracking cand cresidual cstresses c- cCORRECT cANS✔✔-
cMore cuniform ccross-sectional carea
- cGenerous cfillets cat cinterior carea
