不同热处理温度对TA16棒材显微组织和力学性能的影响

范玉婷; 彭力; 李京懋; 秦海旭

doi:10.7513/j.issn.1004-7638.2025.03.009

不同热处理温度对TA16棒材显微组织和力学性能的影响

doi: 10.7513/j.issn.1004-7638.2025.03.009

范玉婷^{1, 2,},
彭力^{1, 2, ,},
李京懋^{1, 2},
秦海旭^{1, 2}

1.
钒钛资源综合利用国家重点实验室，四川攀枝花 617000
2.
成都先进金属材料产业技术研究院股份有限公司，四川成都610300

详细信息

作者简介:
范玉婷，1994年出生，女，新疆昌吉人，硕士，从事钛合金产品开发研究工作，E-mail：2935021981@qq.com

通讯作者:
彭力，1990年出生，男，四川遂宁人，博士，从事钛合金产品开发，E-mail：listen0812@163.com

中图分类号: TF823,TG142
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- 文章访问数: 93
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- 被引次数: 0
出版历程
- 收稿日期: 2024-06-18
- 网络出版日期: 2025-06-30
- 刊出日期: 2025-06-30

Microstructure and mechanical properties of TA16 bar with different heat treatment temperatures

FAN Yuting^{1, 2
,},
PENG Li^{1, 2
, ,},
LI Jingmao^{1, 2},
QIN Haixu^{1, 2}

1.
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China
2.
Chengdu Advanced Metal Materials Industry Technology Research Institute Co., Ltd., Chengdu 610300, Sichuan, China

摘要

摘要: 研究了热处理温度对Ø230 mm的TA16棒材微观组织、织构和力学性能的影响。结果表明：锻棒横纵向样原始组织为拉长的变形等轴组织，大晶粒内部分布着孪晶，横向样抗拉强度、屈服强度高于纵向样；随着退火温度的升高，横纵向样组织由拉长的变形晶粒逐渐趋于等轴化；原始锻态{10-12}拉伸孪晶含量最多，且随着热处理温度的升高，{10-12}拉伸孪晶在逐渐减少，当热处理温度升高至800 ℃时，孪晶完全消失，再结晶晶粒逐渐长大；原始锻态织构主要集中在{0001}//RD取向，与ND有一定夹角，当热处理温度升高至750 ℃时，织构强度降低，织构类型发生变化，集中在{0001}//ND取向，且与RD有一定夹角；且随着热处理温度的升高，横纵向样的抗拉强度、屈服强度、屈强比整体均呈下降趋势，延伸率逐渐升高。
- TA16钛合金 /
- 热处理 /
- 再结晶 /
- 孪晶 /
- 织构 /
- 抗拉强度
Abstract: The effect of heat treatment temperature on the microstructure, texture, and mechanical properties of Ø230 mm TA16 bar was studied. The results show that the original microstructure of the forged bar is an elongated and deformed equiaxed structure in both horizontal and vertical directions. Twin crystals are distributed inside the large grains. The tensile strength and yield strength of the transverse sample are higher than those of the longitudinal sample. With the heat treatment temperature increases, the transverse and longitudinal microstructures gradually shift from elongated deformed grains to equiaxed grains.The original forged {10-12} has the highest content of tensile twins, and as the heat treatment temperature increases, the {10-12} tensile twins gradually decrease. When the heat treatment temperature rises to 800 ℃, the twins completely disappear, and the recrystallized grains gradually grow. The original forged texture is mainly concentrated in the {0001}//RD orientation, with a certain angle with ND. When the heat treatment temperature rises to 750 ℃, the texture strength decreases and the texture type changes, concentrated in {0001}//ND orientation, with a certain angle with RD. As the heat treatment temperature increases, the overall tensile strength, yield strength, and yield ratio of the transverse and longitudinal samples show a decreasing trend, while the elongation gradually increases.
- TA16 /
- heat treatment /
- recrystallization /
- twin crystals /
- texture /
- tensile strength

HTML全文

图 1 TA16合金Ø230 mm的棒材的锻态组织

横向：(a)边部, (b)R/2, (c)中心；纵向：(d)边部, (e)R/2, (f)中心

Figure 1. Forged structure of Ø230 mm TA16 alloy bar

下载: 全尺寸图片幻灯片

图 2 TA16锻棒在不同热处理温度下的横向样金相显微组织

Figure 2. Metallographic microstructure of horizontal TA16 alloy bar sample under different heat treatment

(a) 650 ℃/1 h; (b) 700 ℃/1 h; (c) 750 ℃/1 h; (d) 800 ℃/1 h

下载: 全尺寸图片幻灯片

图 3 TA16锻棒在不同热处理温度下的纵向样金相显微组织

Figure 3. Metallographic microstructure of vertical TA16 alloy bar sample under different heat treatment

(a) 650 ℃/1 h; (b)700 ℃/1 h; (c)750 ℃/1 h; (d)800 ℃/1 h

下载: 全尺寸图片幻灯片

图 4 不同热处理温度IPF图

Figure 4. IPF maps at different heat treatment temperature

(a) 原始锻态; (b) 650 ℃; (c) 700 ℃; (d)750 ℃

下载: 全尺寸图片幻灯片

图 5 不同热处理温度孪晶分布

Figure 5. Twin crystals distribution maps at different heat treatment temperatures

(a) 原始锻态; (b) 650 ℃; (c) 700 ℃; (d) 750 ℃

下载: 全尺寸图片幻灯片

图 6 不同热处理温度极图

Figure 6. PFs at different heat treatment temperatures

(a) 原始锻态; (b)650 ℃; (c)700 ℃; (d)750 ℃

下载: 全尺寸图片幻灯片

图 7 不同热处理温度对室温力学性能影响

(a)抗拉强度；(b)屈服强度；(c)延伸率；(d)屈强比

Figure 7. Effect of heat treatment temperature on tensile properties at room-temperature

下载: 全尺寸图片幻灯片

图 8 TA16原始锻态基面<a>滑移系施密特分布及施密特因子分布

(a) TD; (b) RD; (c)不同方向的施密特因子分布

Figure 8. SF and Schmid factor distribution maps of <a> slip system on the original forged base plane of TA16

下载: 全尺寸图片幻灯片

表 1 TA16钛合金化学成分

Table 1. Chemical compositions of TA16 alloy %

部位 Al Zr O N H Fe C

上 2.27 2.26 0.11 0.0058 0.0011 0.079 0.0085
中 2.21 2.34 0.11 0.0030 0.0012 0.089 0.0073
下 2.14 2.22 0.11 0.0034 0.00088 0.085 0.013

下载: 导出CSV

表 2 热处理制度

Table 2. Heat treatment processes

工艺编号热处理制度
温度/℃ 时长/h 方式

1^＃ 650 1 AC
2^＃ 700 1 AC
3^＃ 750 1 AC
4^＃ 800 1 AC

下载: 导出CSV

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