Effect of cooling methods on the microstructure and mechanical properties of marine engineering titanium alloy ring components

HE Wenxuan; LUAN Chao; LI Kuo; GUO Yifeng; XU Bin; SUN Mingyue

doi:10.7513/j.issn.1004-7638.2026.02.011

Volume 47 Issue 2

Apr. 2026

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HE Wenxuan, LUAN Chao, LI Kuo, GUO Yifeng, XU Bin, SUN Mingyue. Effect of cooling methods on the microstructure and mechanical properties of marine engineering titanium alloy ring components[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(2): 88-96. doi: 10.7513/j.issn.1004-7638.2026.02.011

Citation:

HE Wenxuan, LUAN Chao, LI Kuo, GUO Yifeng, XU Bin, SUN Mingyue. Effect of cooling methods on the microstructure and mechanical properties of marine engineering titanium alloy ring components[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(2): 88-96. doi: 10.7513/j.issn.1004-7638.2026.02.011

Citation:

HE Wenxuan, LUAN Chao, LI Kuo, GUO Yifeng, XU Bin, SUN Mingyue. Effect of cooling methods on the microstructure and mechanical properties of marine engineering titanium alloy ring components[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(2): 88-96. doi: 10.7513/j.issn.1004-7638.2026.02.011

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Effect of cooling methods on the microstructure and mechanical properties of marine engineering titanium alloy ring components

doi: 10.7513/j.issn.1004-7638.2026.02.011

HE Wenxuan^{1, 2, 3
,},
LUAN Chao^{4, 5},
LI Kuo^{2, 3},
GUO Yifeng^{4, 5
,
,},
XU Bin^{2, 3
,
,},
SUN Mingyue^{2, 3, 5}

1.
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, Liaoning, China
2.
Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China
3.
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China
4.
Suzhou National Laboratory, Suzhou 215123, Jiangsu, China
5.
JITRI Advanced Materials R & D Co., Ltd, Jiangsu 215131, Suzhou, China

More Information

Received Date: 2026-01-22
Accepted Date: 2026-02-28
Rev Recd Date: 2026-02-12

Available Online: 2026-04-29

Publish Date: 2026-04-29

Abstract

Abstract

This study systematically investigates the influence of three cooling methods—oil cooling (OC), wind cooling (WC), and sand cooling (SC)—on the microstructure and mechanical properties in large-scale ring-rolled near-α titanium alloy components. Experimental results demonstrate that the strength of specimens heat-treated at 980 ℃ shows no significant variation across different cooling methods. This is primarily attributed to the low volume fraction of the β phase at this temperature, which minimizes the effect of cooling on the formation of the secondary α phase (α_s). Furthermore, the experiments revealed a marked decrease in impact energy following OC heat treatment, which is associated with the rapid cooling rate promoting the precipitation of the brittle martensite phase (α'). An optimal balance between tensile strength and impact toughness is achieved after WC heat treatment at 990 ℃. This phenomenon is mainly attributed to the low volume fraction of the primary α phase (α_p), the absence of brittle α' precipitation from the prior β phase, and the moderate width of the α_s laths. Additionally, SC heat treatment exhibits a faster cooling rate during the high-temperature stage and a slower rate during the low-temperature stage. Since the microstructural morphological features such as phase volume fraction and lath width in titanium alloys are mainly governed by the cooling rate at high temperature, the mechanical properties of SC-treated specimens lie between those of OC and WC.
- marine engineering titanium alloy,
- large ring rolling part,
- cooling rate,
- lamellar microstructure,
- mechanical properties

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References(29)

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