Phase Transformation in Welding S Uranaree unversity

of 36

  • date post

    10-Feb-2018
  • Category

    Documents

  • view

    215
  • download

    0

Embed Size (px)

Transcript of Phase Transformation in Welding S Uranaree unversity

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    1/36

    Tleiaioidctiln cna phcsbTleiaioidctiln cna phcsb

    trcnsolrfctilns in wbeaingtrcnsolrfctilns in wbeaingTuk`bdts lo Intbrbst

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7

    Zcrt I0 Tleiaioidctiln cna phcsb trcnsolrfctilns in dcrkln stbbe

    cna stcinebss stbbe wbeas

    Zcrt II0 Lvbrcging in cgb-hcrabnckeb ceufiniuf wbeas

    Zcrt III0 Zhcsb trcnsolrfctiln hcrabning in titcniuf ceelys

    Tleiaioidctiln in stcinebss stbbe wbeas

    Tleiaioidctiln in elw dcrkln, elw ceely stbbe wbeas

    Qrcnsolrfctiln hcrabning in HCP lo dcrkln stbbe wbeas

    Qcpcny Ralfphle

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    2/36

    Lk`bdtivbsLk`bdtivbs

    Qhis dhcptbr cifs tl0

    Ttuabnts crb rbquirba tl unabrstcna sleiaioidctiln cna

    phcsb trcnsolrfctilns in thb wbea, whidh coobdt thb wbea

    fidrlstrudturb in dcrkln stbbes, stcinebss stbbes, ceufiniufceelys cna titcniuf ceelys.

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7Qcpcny Ralfphle

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    3/36

    IntrlaudtilnIntrlaudtiln

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7Qcpcny Ralfphle

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    4/36

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7

    Zcrt I0Tleiaioidctiln in dcrkln

    stbbe cna stcinebss stbbe wbeas

    Dcrkln cna ceely stbbes withhighbr strbngth ebvbes crb flrb

    aiooiduet tl wbeaaub tl thb rism lo

    hyarlgbn drcdming.

    Ob-D phcsb kincry phcsb aicgrcf.

    Custbnitb tl obrritb trcnsolrfctilnin elw dcrkln, elw ceely stbbe

    wbeas.

    Obrritb tl custbnitb trcnsolrfctiln

    in custbnitid stcinebss stbbe wbeas. Fcrtbnsitb trcnsolrfctiln is nlt

    nlrfceey lksbrvba in thb HCPlo c

    elw-dcrkln stbbe.

    Dcrkln cna ceely stbbes crb flrb orbqubntey wbeaba thcn cny lthbr fctbrices

    aub tl thbir wiabsprbca cppeidctilns cna glla wbeackieity.

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    5/36

    Tleiaioidctiln in stcinebss stbbe wbeasTleiaioidctiln in stcinebss stbbe wbeas

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7

    Ni ridh stcinebss stbbeoirst

    sleiaioibs cs prifcry abnaritb

    lo custbnitb with

    intbrabnaritid obrritb.

    Dr ridh stcinebss stbbeoirst

    sleiaioibs cs prifcry obrritb. Rpln

    dlleing intl ++++rbgiln, thb lutbr

    plrtiln (hcving ebss Dr) trcnsolrfsintl custbnitb, ebcving thb dlrb lo

    abnaritb cs smbebtln (vbrfiduecr).

    Qhis dcn cesl trcnsolrf intl ecthey

    obrritb auring dlleing.

    Tleiaioidctiln cna plst sleiaioidctiln

    trcnsolrfctiln in Ob-Dr-Ni wbeas

    (c) intbrabnaritid obrritb,

    (k) vbrfiduecr obrritb (d ) ecthy obrritb

    (a) sbdtiln lo Ob-Dr-Ni phcsbaicgrcf

    Qcpcny Ralfphle

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    6/36

    Tleiaioidctiln in stcinebss stbbe wbeasTleiaioidctiln in stcinebss stbbe wbeas

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7

    Wbea fidrlstrudturb lo high Ni

    43: stcinebss stbbe(;2%Dr-

    ;:%Ni-22%Ob) dlnsists lo prifcry

    custbnitb abnaritbs cnaintbrabnaritidobrritb kbtwbbn

    thb prifcry cna sbdlnacry abnaritb

    crfs.

    Wbea fidrlstrudturb lo high Dr4:9 stcinebss stbbe(;4%Dr-

    31%Ni-?4%Ob) dlnsists lo prifcry

    vbrfiduecr lr ecthyobrritb in cn

    custbnitb fctrix.

    Qhb dleufncr abnaritbs in klth

    fidrlstrudturbs grlw in thb

    airbdtiln pbrpbnaiduecr tl thb tbcr

    arlp shcpba wbea plle

    klunacry. Tleiaioidctiln strudturb in (c) 43: stcinebssstbbe cna (k) 4:9 stcinebss stbbe.

    Custbnitb abnaritbs cna

    intbrabnaritid obrritb

    Zrifcry vbrfiduecr lr ecthy

    obrritb in custbnitb fctrix

    Qcpcny Ralfphle

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    7/36

    Tleiaioidctiln in stcinebss stbbe wbeasTleiaioidctiln in stcinebss stbbe wbeas

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7

    Subndhba sleiaioidctiln strudturb nbcr thb plle lo cn

    cutlgbnlus GQC wbea lo 4:9 stcinebss stbbes

    Zrifcry obrritb

    abnaritbs

    C qubndhba strudturb lo obrritid

    (4:9) stcinebss stbbe ct thb wbea plle

    klunacry auring wbeaing shlws

    prifcry obrritb abnaritbs kbolrbtrcnsolrfing intl vbrfiduecr obrritb

    aub tl trcnsolrfctiln.

    Qcpcny Ralfphle

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    8/36

    Fbdhcnisfs lo obrritb olrfctilnFbdhcnisfs lo obrritb olrfctiln

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7

    Qhb Dr0 Ni rctil dlntrles thb

    cflunt lo vbrfiduecr cna ecthy obrritb

    fidrlstrudturb.

    Dr 0 Ni rctil

    _brfiduecr & Ecthy obrritb

    Custbnitb oirst grlws bpitcxiceey orlf

    thb unfbetba custbnitb grcins ct thbousiln klunacry, cna obrritb slln

    nudebctbs ct thb sleiaioidctiln orlnt in thb

    prbobrrba 53::> airbdtiln.

    Ecthy obrritb in cn

    cutlgbnlus GQCW lo

    Ob-38.8Dr-33.;Ni.

    Fbdhcnisf olr thb olrfctiln lo vbrfiduecrcna ecthy obrritb.

    Qcpcny Ralfphle

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    9/36

    Zrbaidtiln lo obrritb dlntbntsZrbaidtiln lo obrritb dlntbnts

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7

    Tdhcbooebrprlplsba obrritb dlntbnt prbaidtiln orlf Drcna Ni

    bquivcebnts (obrritb olrfbrs cna custbnitb olrfbrs rbspbdtivbey).

    Tdhcbooebr aicgrcf olr prbaidting wbea obrritb dlntbnt cna sleiaioidctiln flab.

    Qcpcny Ralfphle

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    10/36

    Boobdt lo dlleing rctb ln sleiaioidctiln flabBoobdt lo dlleing rctb ln sleiaioidctiln flab

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7

    Dlleing rctb

    Elw Dr 0 Ni rctil

    High Dr 0 Ni rctil

    Obrritb dlntbnt abdrbcsbs

    Obrritb dlntbnt indrbcsbs

    Tleia rbaistrikutiln auring sleiaioidctiln is rbaudba ct high dlleing rctb

    olr elw Dr0 Ni rctil.

    Ln thb lthbr hcna, high Dr 0 Ni rctil ceelys sleiaioy cs obrritb cs thb

    prifcry phcsb, cna thbir obrritb dlntbnt indrbcsb with indrbcsing dlleing

    rctb kbdcusb thb trcnsolrfctiln hcs ebss tifb tl lddur ct high

    dlleing rctb.

    Nltb0 it wcs oluna thct io N; is intrlaudba intl thb wbea fbtce (ky caaing

    tlCr shibeaing gcs), thb obrritb dlntbntin thb wbea dcn kb signioidcntey

    rbaudba. (Nitrlgbn is c strlng custbnitb olrfbr)

    High bnbrgy kbcf

    sudh cs BKW, EKW

    Qcpcny Ralfphle

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    11/36

    Obrritb tl custbnitb trcnsolrfctilnObrritb tl custbnitb trcnsolrfctiln

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7

    Ct dlfplsitiln Dl, thb ceely

    sleiaioibs in thbprifcry obrritb flab

    ct elw dlleing rctb sudh cs in

    GQCW.

    Ct highbr dlleing rctb, i.b., BKW,

    EKW, thb fbet dcn unabrdlle kbelw

    thb bxtbnaba custbnitb eiquiaus (DE)

    cna it is thbrflayncfidceey plssikeb

    olrprifcry custbnitb tl sleiaioy. Qhb delsbr thb dlfplsitiln delsb tl

    thb thrbb-phcsb tricngeb, thb bcsibr

    thb sleiaioidctiln flab dhcngbs orlf

    prifcry obrritb tl prifcry custbnitb

    unabr thb dlnaitiln lo unabrdlleing.

    Dlleing rctb Obrritb custbnitb

    Tbdtiln lo O-Dr-Ni phcsb aicgrcf shlwing

    dhcngb in sleiaioidctiln orlf obrritb tl

    custbnitb aub tl abnaritb tip unabrdlleing

    Wbea dbntrbeinb custbnitb in cn cutlgbnlus GQC wbea lo

    4:9 stcinebss stbbe sleiaioiba cs prifcry obrritb

    Zrifcry

    obrritb custbnitb

    Ct dlfplsitilns delsb tl

    thb thrbb phcsb tricngeb.

    Qcpcny Ralfphle

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    12/36

    Obrritb aissleutiln upln rbhbctingObrritb aissleutiln upln rbhbcting

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7

    Fueti pcss wbeainglr rbpcirba

    custbnitid stcinebss stbbe wbea dlnsists

    lo cs-abplsitbalo thb prbvilus wbea

    kbcas cna thb rbhbctba rbgiln lo thbprbvilus wbea kbcas.

    Aissleutiln lo obrritb lddurs

    kbdcusb this rbgiln is rbhbctba tl

    kbelw thb slevus tbfpbrcturb.

    Qhis fcmbs it susdbptikeb tl

    oissuring unabr strcin, aub tl elwbr

    obrritb cna rbaudba audtieity.

    Boobdt lo thbrfce dydebs ln obrritb

    dlntbnt in 43? stcinebss stbbe wbea (c)

    cs wbea (k) suk`bdtba tl thbrfce dydeb

    lo 3;2:lD pbcm tbfpbrcturb thrbb tifbs

    cotbr wbeaing.

    Zrifcry custbnitb abnaritbs (eight)

    with intbrabnaritidobrritb (acrm)

    Aissleutiln lo obrritb cotbr thbrfce

    dydebs auring fuetipcss wbeaing

    Qcpcny Ralfphle

  • 7/22/2019 Phase Transformation in Welding S Uranaree unversity

    13/36

    Tleiaioidctiln in elw dcrkln stbbe wbeasTleiaioidctiln in elw dcrkln stbbe wbeas

    Turcncrbb Rnivbrsity lo Qbdhnlelgy Tbp-Abd ;::7

    Qhb abvbelpfbnt lo wbea fidrlstrudturb in elw dcrkln stbbes

    is sdhbfctidceey shlwn in oigurb.

    Cs custbnitb is dlleba alwn orlf

    high tbfpbrcturb, obrritb nudebctbs

    ct thb grcin klunacry cna grlw inwcra

    cs Wiafcnstttbn. Ct elwbr tbfpbrcturb, it is tll selw olr

    Wiafcnstttbn obrritb tl grlw tl thb

    grcin intbrilr, instbca cdiduecr obrritb

    nudebctbs orlf indeusilns

    Qhb grcin klunacry obrritb is cesl

    dceeba ceeltrilflrphid.Dlntinulus Dlleing Qrcnsolrfctiln

    (DDQ) aicgrcf olr wbea fbtce lo elw

    dcrkln stbbe

    Qcpcny Ralfphle

  • 7/22/2019 Phas