Hot deformation behaviour of Ti–8Al–1Mo–1V alloy (Ti-811) was investigated through the hot compression tests at the temperatures of 950–1075 °C and at strain rates of 0.001–1 s−1. The flow curves of the Ti-811 alloy were successfully modelled by means of the sinh equation and constitutive equations were proposed for isothermal hot compression of Ti-811 alloy. According to the date of flow curves, the values were calculated for the strain rate sensitivity, stress exponent and activation energy. The amounts of the strain rate sensitivity, stress exponent, and activation energy were calculated as 0.19, 3.95 and 730 kJ mol−1 for α + β region and 0.21, 3.6 and 194 kJ mol−1 for β region, respectively.
WangHGWangFSongYP. Effects of heat treatment on microstructures and properties of Ti811 alloys. Appl Mech Mater2012; 119: 1032–1035.
2.
HuangLJGengLLiAB, et al.Characteristics of hot compression behavior of Ti–6.5Al–3.5Mo–1.5Zr–0.3Si alloy with an equiaxed microstructure. Mater Sci Eng A2009; 505: 136–143.
3.
PangGD, et al.Precipitation behaviors and orientation evolution mechanisms of α phases in Ti-55511 titanium alloy during heat treatment and subsequent hot deformation. Mater Charact2020; 167: 110471.
4.
SahaBJanaBYadavJS,et al.Development and certification of Ti–8Al–1Mo–IV alloy for HP compressor blades for adour engine applications. Bull Mater Sci 1996;19(4):661–669.
5.
JaffeeRI. The physical metallurgy of titanium alloys. Progr Met Phys1958; 7: 65–106.
6.
LinYCPangGJiangY, et al.Hot compressive deformation behavior and microstructure evolution of a Ti-55511 alloy with basket-weave microstructures. Vacuum2019; 169: 108878.
7.
LinYCXiaoYJiangY, et al.Spheroidization and dynamic recrystallization mechanisms of Ti-55511 alloy with bimodal microstructures during hot compression in α þ β region. Mater Sci Eng A2020; 782: 139282.
8.
ZhangJLiHZhanM. Review on globularization of titanium alloy with lamellar colony. Manuf Rev2020; 18: 1–14.
9.
SemiatinSLSeetharamanVWeissI. Hot workability of titanium and titanium aluminide alloys – an overview. Mater Sci Eng A1998; 243: 1–24.
10.
QiRJinMGuoB, et al.Hot-deformation behavior and hot-processing maps of AISI 410 martensitic stainless steel. High Temp Mater Proc2016; 35: 929–940.
11.
XuRRLiHLiMQ. Flow softening mechanism in isothermal compression of β-solidifying γ-TiAl alloy. Mater Des2020; 186: 1–13.
12.
GuoBSemiatinSLJonasJJ. Dynamic transformation during the high temperature deformation of two-phase titanium alloys. Mater Sci Eng A2019; 761: 138047.
13.
LinYC, et al.Phase transformation and dynamic recryctallization behaviors in a Ti55511 titanium alloy during hot compression. J Alloys Compd2019; 795: 471–482.
14.
JonasJJAranasCFallA,et al.Transformation softening in three titanium alloys. Mater Des2017; 113: 305–310.
15.
MomeniAAbbasiSM. Effect of hot working on flow behavior of Ti–6Al–4V alloy in single phase and two phase regions. Mater Des2010; 31: 3599–3604.
16.
PorntadawitJUthaisangsukVChoungthongP. Modeling of flow behavior of Ti–6Al–4V alloy at elevated temperatures. Mater Sci Eng A2014; 599: 212–222.
17.
LuoJLiLLiMQ. Deformation behavior of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy with two initial microstructures during hot working. Trans Nonferrous Met Soc China (English Ed)2016; 26: 414–422.
18.
AbbasiSMMomeniALinYC,et al.Dynamic softening mechanism in Ti–13V–11Cr–3Al beta Ti alloy during hot compressive deformation. Mater Sci Eng A2016; 665: 154–160.
19.
ZhouXWangKLuS, et al.Flow behavior and 3D processing map for hot deformation of Ti–2.7Cu alloy. J Mater Res Technol2020; 9: 2652–2661.
20.
GaoPFGuoJZhanM, et al.Microstructure and damage based constitutive modelling of hot deformation of titanium alloys. J Alloys Compd2020; 831: 154851.
21.
PangD, et al.Precipitation behaviors and orientation evolution mechanisms of α phases in Ti-55511 titanium alloy during heat treatment and subsequent hot deformation. Mater Charact 2020; 167: 110471.
22.
GhoshSHamadaAPatnamsettyM,et al.Constitutive modeling and hot deformation processing map of a new biomaterial Ti e 14Cr alloy. J Mater Res Technol2022; 20: 4097–4113.
23.
LinX, et al.Study on hot deformation behavior and processing map of a Ti–47.5Al–2.5V–1.0Cr–0.2Zr alloy with a fully lamellar microstructure. J Alloys Compd2022; 901: 163648.
24.
WangJWangKLuS, et al.Softening mechanism and process parameters optimization of Ti–4.2Al–0.005B titanium alloy during hot deformation. J Mater Res Technol2022; 17: 1842–1851.
25.
DastidarIGKhademiVBielerTR, et al.The tensile and tensile-creep deformation behavior of Ti–8Al–1Mo–1V (wt %). Mater Sci Eng A2015; 636: 289–300.
26.
PrabhunandanGSByregowdaHV. Study on Ti–8Al–1Mo–1V alloy (near alpha alloy) steam turbine rotor blade using FEA. 4th Int Conf Multidiscip Res Pract2017; 3: 28–30.
27.
YangK, et al.Very high cycle fatigue behaviors of a turbine engine blade alloy at various stress ratios. Int J Fatigue2017; 99: 35–43.
28.
MaYZhaoFHeJ,et al.Correction of flow stress for hot compression of INCO718 alloy. Int Conf Manuf Sci Eng2015; 1: 1431–1436.
29.
CheginiMAboutalebiMRSeyedeinSH, et al.Study on hot deformation behavior of AISI 414 martensitic stainless steel using 3D processing map. J Manuf Proc2020; 56: 916–927.
30.
CastellanosJRieiroICarsíM, et al.Analysis of adiabatic heating in high strain rate torsion tests by an iterative method : application to an ultrahigh carbon steel. WIT Trans Eng Sci2007; 57: 219–228.
31.
El MehtediMRuanoOACastellanosJ, et al.Analysis of adiabatic heating and its influence on the Garofalo equation parameters of a high nitrogen steel. Mater Sci Eng A2009; 517: 191–196.
32.
MomeniADehghaniKKeshmiriH,et al.Hot deformation behavior and microstructural evolution of a superaustenitic stainless steel. Mater Sci Eng A2010; 527: 1605–1611.
33.
WeissISemiatinSL. Thermomechanical processing of alpha titanium alloys – an overview. Mater Sci Eng A1999; 263: 243–256.
34.
WanjaraPJahaziMMonajatiH, et al.Hot working behavior of near-α alloy IMI834. Mater Sci Eng A2004; 396: 50–60.
35.
KoikeJShimoyamaYOkamuraT,et al.Superplasticity assisted by stress-induced phase transformation in Ti–5.5AI–1Fe alloy. Mater Sci Forum1999; 304–306: 183–188.
36.
WangL, et al.The heterogeneous globularization related to crystal and geometrical orientation of two-phase titanium alloys with a colony microstructure. Mater Des2020; 186: 108338.
37.
VoPJahaziMYueS. Recrystallization during thermomechanical processing of IMI834. Metall Mater Trans A2008; 39: 2965–2980.
38.
LianggangGXiaoguangFGaofengY,et al.Microstructure control techniques in primary hot working of titanium alloy bars: a review. Chin J Aeronaut2016; 29: 30–40.
39.
TcheinGJ, et al.Analytical modeling of hot behavior of Ti–6Al–4V alloy at large strain. Mater Des2019; 161: 114–123.
40.
PoliaktEIJonassJJ. A one-parameter approach to determining the critical conditions for the initiation of dynamic recrystallization. Acta Mater1996; 44: 127–136.
41.
MomeniAEzatpourHRJahaziM, et al.Dynamic recrystallization in Monel400 Ni–Cu alloy: mechanism and role of twinning. Mater Sci Eng A2018; 744: 376–385.
