β-Texture Evolution of a Near-β Titanium Alloy During Cooling After Forging in the β Single-Phase and (α + β) Dual-Phase Regions

被引:0
作者
L. Meng
T. Kitashima
T. Tsuchiyama
M. Watanabe
机构
[1] National Institute for Materials Science,
[2] Kyushu University,undefined
来源
Metallurgical and Materials Transactions A | 2021年 / 52卷
关键词
D O I
暂无
中图分类号
学科分类号
摘要
β-Texture evolution during cooling after forging in the β single-phase region and (α + β) dual-phase region was investigated in Ti-6Al-2Sn-4Zr-6Mo alloy. Typical {001} and {111} β fiber textures of the β phase developed during forging. Dynamic-recrystallized β grains formed and inherited the orientation of their parent grains during forging in the β single-phase region. The {001} texture was enhanced with decreasing cooling rate after forging in the β region, that is, as cooling time in the β region increased. The results of the post-forging holding in the β region demonstrated that the recrystallized grains that grew in the β region consumed the adjacent {111}-oriented parent grains and initially enhanced the {001} texture. However, the enhancement of the {001} texture was moderated with increasing holding time because of the increased orientation deviation between the recrystallized grains and the parent grains. In addition, the {001} β texture was weakened by the growth of static-recrystallized grains after its incubation period during the holding time. These results indicate that growth of dynamic-recrystallized and static-recrystallized grains moderated the increase of the {001} texture intensity at low cooling rates of specimens forged in the β region. In specimens forged near the β-transus temperature and in the (α + β) dual-phase region, the {001} texture intensity was only slightly affected by the cooling rate. Recrystallization of the β phase was suppressed by the precipitation of the α phase during forging and cooling at low temperatures. A slow cooling rate of − 2 °C/s was determined by measuring the temperature change of a large specimen similar in size to those used in real-world applications.
引用
收藏
页码:303 / 315
页数:12
相关论文
共 137 条
  • [1] Peters J.O.(1996)undefined Mater. Sci. Eng. A 213 71-80
  • [2] Lütjering G.(2001)undefined J. Mater. Process. Technol. 117 311-17
  • [3] Koren M.(1998)undefined Mater. Sci. Eng. A 243 206-11
  • [4] Puschnik H.(2016)undefined J. Alloys Compd. 67 381-88
  • [5] Boyer R.R.(2010)undefined Mater. Sci. Eng. A 527 4210-17
  • [6] Sauer C.(2013)undefined Mater. Sci. Eng. A 584 121-32
  • [7] Luetjering G.(2010)undefined Mater. Sci. Eng. A 773 1-8
  • [8] Ahmed T.(2018)undefined Adv. Eng. Mater. 20 549-58
  • [9] Rack H.J.(2017)undefined Metals (Basel) 7 372-82
  • [10] Hua K.(2020)undefined Mater. Sci. Eng. A 771 150-55