热变形对47Zr-45Ti-5Al-3V合金在变形过程中α→β相转变的影响（英文）
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摘要
研究应变速率和变形温度对具有初始片状α相的47Zr-45Ti-5Al-3V合金在热变形过程α→β相转变的影响。结果表明,当变形温度为550°C时,α相的体积分数随应变速率的增加而降低;而当变形温度为600和650°C时,随应变速率从1×10~(-3) s~(-1)增大到1×10~(-2) s~(-1),α相的体积分数先增加到一个最大值,随后随应变速率的增加而逐渐下降;当变形温度为700°C时,整个变形过程中合金组织由单一β相组成。在一个给定的应变速率条件下,α相的体积分数随着变形温度的增加而降低。随着应变速率的降低和变形温度的增加,球状α相的体积分数和尺寸逐渐增加。当变形温度达到650°C和应变速率降低到1×10~(-3) s~(-1)时,片状α相完全转变为球状α相。α相的体积分数及形貌随应变速率和变形温度的变化显著影响合金的硬度。
The effect of strain rate and deformation temperature on the α→β phase transformation in 47 Zr-45 Ti-5 Al-3 V alloy with an initial widmanstatten α structure was investigated. At the deformation temperature of 550 °C, the volume fraction of α phase decreased with increasing strain rate. At 600 and 650 °C, the volume fraction of α phase firstly increased to a maximum value with increasing strain rate from 1×10~(-3) to 1×10~(-2) s~(-1), and then decreased. At 700 °C, the microstructure consisted of single β phase. At a given strain rate, the volume fraction of α phase decreased with increasing deformation temperature. With decreasing strain rate and increasing deformation temperature, the volume fraction and size of globular α phase increased. At 650 °C and 1×10~(-3) s~(-1), the lamellar α phase was fully globularized. The variation in the volume fraction and morphology of α phase with strain rate and deformation temperature significantly affected the hardness of 47 Zr-45 Ti-5 Al-3 V alloy.
The effect of strain rate and deformation temperature on the α→β phase transformation in 47 Zr-45 Ti-5 Al-3 V alloy with an initial widmanstatten α structure was investigated. At the deformation temperature of 550 °C, the volume fraction of α phase decreased with increasing strain rate. At 600 and 650 °C, the volume fraction of α phase firstly increased to a maximum value with increasing strain rate from 1×10~(-3) to 1×10~(-2) s~(-1), and then decreased. At 700 °C, the microstructure consisted of single β phase. At a given strain rate, the volume fraction of α phase decreased with increasing deformation temperature. With decreasing strain rate and increasing deformation temperature, the volume fraction and size of globular α phase increased. At 650 °C and 1×10~(-3) s~(-1), the lamellar α phase was fully globularized. The variation in the volume fraction and morphology of α phase with strain rate and deformation temperature significantly affected the hardness of 47 Zr-45 Ti-5 Al-3 V alloy.
引文
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[2]ZHANG X Y,SHI M H,LI C,LIU N F,WEI Y M.The influence of grain size on the corrosion resistance of nanocrystalline zirconium metal[J].Materials Science and Engineering A,2007,448:259-263.
[3]JUNG Y,SEOL Y N,CHOI B K,PARK J Y.Behavior of stressrelaxation and the estimation of creep in Zr-1.1Nb-0.05Cu alloy[J].Materials and Design,2012,42:118-123.
[4]ZHOU F Y,WANG B L,QIU K J,LIN W J,LI L,WANG Y B,NIEF L,ZHENG Y F.Microstructure,corrosion behavior and cytotoxicity of Zr-Nb alloys for biomedical application[J].Materials Science and Engineering C,2012,32(4):851-857.
[5]KISHORE R,SINGH R N,DEY G K,SINHA T K.Age hardening of cold-worked Zr-2.5wt%Nb pressure tube alloy[J].Journal of Nuclear Materials,1992,187(1):70-73.
[6]YANG Z N,LIU F C,ZHANG F C,YAN Z G,XIAO Y Y.Microstructural evolution and mechanical properties in Zr705 during the rolling process[J].Materials Science and Engineering A,2012,544:54-58.
[7]LIANG S X,MA M Z,JING R,ZHANG X Y,LIU R P.Microstructure and mechanical properties of hot-rolled ZrTiAlValloys[J].Materials Science and Engineering A,2012,532:1-5.
[8]LIANG S X,MA M Z,JING R,ZHOU Y K,JING Q,LIU R P.Preparation of the ZrTiAlV alloy with ultra-high strength and good ductility[J].Materials Science and Engineering A,2012,539:42-47.
[9]LIANG S X,YIN L X,CHE H W,JING R,ZHOU Y K,MA M Z,LIU R P.Effects of Al content on structure and mechanical properties of hot-rolled ZrTiAlV alloys[J].Materials and Design,2013,52:246-250.
[10]ZHU S,YANG H,GUO L G,FAN X G.Effect of cooling rate on microstructure evolution duringα/βheat treatment of TA15 titanium alloy[J].Materials Characterization,2012,70:101-110.
[11]JING R,LIANG S X,LIU C Y,MA M Z,LIU R P.Effect of the annealing temperature on the microstructural evolution and mechanical properties of TiZrAlV alloy[J].Materials and Design,2013,52:981-986.
[12]JING R,LIANG S X,LIU C Y,MA M Z,LIU R P.Aging effects on the microstructures and mechanical properties of the Ti-20Zr-6.5Al-4V alloy[J].Materials Science and Engineering A,2013,559:474-479.
[13]LIANG S X,YIN L X,LIU X Y,JING R,ZHOU Y K,MA M Z,LIUR P.Effects of annealing treatments on microstructure and mechanical properties of the Zr345Ti35Al33V alloy[J].Materials Science and Engineering A,2013,582:374-378.
[14]QU L,YANG Z N,ZHANG F C,ZHANG M,ZHANG X Y,LIU R P.Effect of deformation and heat treatment on the microstructure and mechanical properties ofβ-Zr40Ti5Al4V alloy[J].Journal of Alloys and Compounds,2014,612(5):80-89.
[15]DU Z X,XIAO S L,SHEN Y P,LIU J S,LIU J,XU L J,KONG F T,CHEN Y Y.Effect of hot rolling and heat treatment on microstructure and tensile properties of high strength beta titanium alloy sheets[J].Materials Science and Engineering A,2015,631:67-74.
[16]YANG H S,GUREWITZ G,MUKHERJEE A K.Mechanical behavior and microstructural evolution during superplastic deformation of Ti-6Al-4V[J].Materials Transactions,JIM,1991,32(5):465-472.
[17]KOIKE J,SHIMOYAMA Y,OHNUMA I,OKAMURA T,KAINUMA R,ISHIDA K,MARUYAMA K.Stress-induced phase transformation during superplastic deformation in two-phase Ti-Al-Fe alloy[J].Acta Materialia,2000,48(9):2059-2069.
[18]SESHACHARYULU T,DUTTA B.Influence of prior deformation rate on the mechanism ofβ→α+βtransformation in Ti-6Al-4V[J].Scripta Materialia,2002,46(9):673-678.
[19]YU W X,LI M Q,LUO J.Effect of deformation parameters on the precipitation mechanism of secondaryαphase under high temperature isothermal compression of Ti-6Al-4V alloy[J].Materials Science and Engineering A,2010,527:4210-4217.
[20]DEHGHAN-MANSHADI A,DIPPENAAR R J.Strain-induced phase transformation during thermo-mechanical processing of titanium alloys[J].Materials Science and Engineering A,2012,552:451-456.
[21]FAN X G,YANG H,GAO P F,ZUO R,LEI P H,JI Z.Morphology transformation of primary stripαphase in hot working of two-phase titanium alloy[J].Transactions of Nonferrous Metals Society of China,2017,27:1294-1305.
[22]WANG K,LI M Q.Effect of hot deformation and heat treatment on secondaryαphase evolution of TC8 titanium alloy[J].Materials Science and Engineering A,2014,613:209-216.
[23]TAN Y B,LIU W C,YUAN H.LIU R P,ZHANG X Y.Hot deformation behavior of ZrTiAlV alloy with a coarse grain structure in theβphase field[J].Materials Science and Engineering A,2013,577:218-224.
[24]LUO J,LI L,LI M Q.Deformation behavior of Ti-5Al-2Sn-2Zr-4Mo-4Cr alloy with two initial microstructures during hot working[J].Transactions of Nonferrous Metals Society of China,2016,26:414-422.
[25]SESHACHARYULU T,MEDEIROS S C,FRAZIER W G,PRASADY V R K.Hot working of commercial Ti-6Al-4V with an equiaxedα-βmicrostructure:Materials modeling considerations[J].Materials Science and Engineering A,2000,284:184-194.
[26]SESHACHARYULU T,MEDEIROS S C,FRAZIER W G,PRASADY V R K.Microstructural mechanisms during hot working of commercial grade Ti-6Al-4V with lamellar starting structure[J].Materials Science and Engineering A,2002,325(1):112-125.
[27]TAN,Y B,JI L Y,DUAN J L,LIU W C,ZHANG J W,LIU R P.Astudy on the hot deformation behavior of 47Zr-45Ti-5Al-3V alloy with initial lamellarαstructure[J].Metallurgical and Materials Transactions A,2016,12(47):5974-5984.
[28]TAN Y B,LIU W C,YUAN H.LIU R P,ZHANG X Y.On the phenomenon of stress drop during hot deformation of ZrTiAlV alloy[J].Metallurgical and Materials Transactions A,2013,44(12):5284-5288.
[29]DE A K,MURDOCK D C,MATAYA M C,SPEER J G,MATLOCKD K.Quantitative measurement of deformation-induced martensite in304 stainless steel by X-ray diffraction[J].Scripta Materialia,2004,50(12):1445-1449.
[30]DONG X J,LU S Q,ZHENG H Z.Dynamic spheroidization kinetics behavior of Ti-6.5Al-2Zr-1Mo-1V alloy with lamellar microstructure[J].Transactions of Nonferrous Metals Society of China,2016,26:1301-1309.
[31]YANG G J,ZHANG T.Phase transformation and mechanical properties of the Ti50Zr30Nb10Ta10 alloy with low modulus and biocompatible[J].Journal of Alloys and Compounds,2005,392(1-2):291-294.
[32]CHEN X Z,HUANG Y M.Hot deformation behavior of HSLA steel Q690 and phase transformation during compression[J].Journal of Alloys and Compounds,2015,619:564-571.
[33]BANERJEE S.MUKHOPADHYAY P.Phase transformations:Examples from titanium and zirconium alloys[M].Amsterdam:Elsevier,2007:557-584.
[34]BURKE J E.Transaction of the american institute of mining[J].Metallurgical and Petroleum Engineers,1949:73-91.
[35]ZHAO Y Q,CHEN Y N,ZHANG X M,ZENG W D,WANG L.Phase transformation and heat treatment of titanium alloys[M].Changsha:Central South University Press,2012:112-139.(in Chinese)
[36]FACCHINI L,MOLINARI A,HOGES S,WISSENBACH K.Ductility of a Ti-6Al-4V alloy produced by selective laser melting of prealloyed powders[J].Rapid Prototyping Journal,2010,16(6):450-459.
[37]NALLA R K,BOYCE B L,CAMPBELL J P,PETERS J O,RITCHIE R O.Influence of microstructure on high-cycle fatigue of Ti-6Al-4V:Bimodal vs lamellar structures[J].Metallurgical and Materials Transactions A,2002,33(13):899-918.