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| Research progress on near-net-shape forming technology of titanium and titanium alloy powder |
| HUANG Xiaogang1，HE Yong1，WANG Jian2，CAO Xihao2,3，LIANG Zulei2,3，
CHEN Xiaolong2,3 |
| 1. The 4th Military Representative Office of the Naval Armament Department in Nanjing，Nanjing 211100，China；
2. SHANGI Institute for Advanced Materials (Nanjing) Co.，Ltd.，Nanjing 240046，China； 3. Nanjing
Tech University，College of Materials Science and Engineering，Nanjing 211816，China |
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Abstract Titanium and its alloy parts have better performance with lighter weight, which have broad application
in aerospace, weapon equipment, automobile industry and other fields. Compared to the traditional method of metal
forging and mechanical processing, near-net-shape forming of titanium and its alloy possess higher material utilization
ratio and faster molding speed for complex structure manufacturing. In this paper, typical preparation techniques
and characteristics of spherical titanium alloy powder for near-net-shape forming were introduced, among
which gas atomization method was the most widely used due to its advantages of higher yield and lower manufacturing
cost. The powder prepared by plasma rotating electrode process had the advantages of good surface quality,
high density and narrow particle size distribution, which was very suitable for application in key fields. Plasma
atomization had attracted much attention of the industry and industry chain because of achieving both high yield of fine powder and high powder quality. The research progress of near-net-shape forming technology of titanium and
its alloy powder was reviewed, the research route of further improving the properties of parts based on microstructure
regulation provided theoretical support for the development of materials and technology of near-net-shape
forming of titanium and titanium alloy powder. It was proposed that unremarkable cost performance of the parts,
low continuity of the whole manufacturing process and few available materials were the main problems in preparation
of titanium and its alloy parts via near-net shape forming technology, and some solutions were given. Finally,
future developments were analyzed, and cost reduction of powder manufacturing and development of new materials
and process were considered to be the important research direction of titanium and titanium alloy powder near-netshape
forming technology.
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Received: 22 September 2021
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Corresponding Authors:
王健（1990—），男，硕士，工程师，主要研究方向为球形金属粉末材料及其制备技术开发。
E-mail: mjjy123@163.com
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2022, Vol. 32 
