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置氫TC21鈦合金粉末模壓成形燒結(jié)組織性能研究
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國(guó)家軍工“973”項(xiàng)目（11AZ6305）


Microstructure and Properties of Die Forming and Sintering of
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    采用置氫TC21鈦合金粉末模壓成形+保護(hù)氣氛燒結(jié)工藝，研究置氫TC21鈦合金粉末模壓成形-燒結(jié)合金的組織性能的變化規(guī)律。結(jié)果表明：置氫量0.22%(質(zhì)量分?jǐn)?shù), 下同)和0.39%的TC21粉末燒結(jié)體組織較細(xì)，致密化程度也較高，置氫量0.39%的TC21粉末燒結(jié)體退火后的抗壓強(qiáng)度和屈服強(qiáng)度最高。隨著置氫量的增加，置氫TC21鈦合金粉末模壓成形燒結(jié)體片層組織尺寸變薄、針狀的組織變細(xì)，晶粒尺寸變??；置氫TC21鈦合金粉末模壓成形燒結(jié)體退火后組織較退火前發(fā)生了明顯的均勻化和細(xì)化；燒結(jié)體真空退火后氫含量達(dá)到安全狀態(tài)，其中，置氫量0.39%的TC21鈦合金粉末燒結(jié)體致密效果較好、綜合力學(xué)性能較高

    Abstract:

    The effect of hydrogenation on the microstructure and properties of TC21 alloy by die forming and sintering using hydrogenated powder to produce titanium alloy was researched by means of the room-temperature die forming and sintering in a protection atmosphere. The results show that the TC21 titanium sintered body using hydrogenated powder with hydrogen content of 0.39 wt% by die forming and sintering has a thinner microstructure and higher density, compression strength and compressive yield strength than the others. With hydrogen content increasing, the sheet microstructure gets thinner and finer and the grain size becomes smaller and homogeneous with safe hydrogen content. As a conclusion, the hydrogen content of 0.39wt% is the best for the TC21 titanium alloy sintered body according to the density and mechanical property.

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田亞強(qiáng),侯紅亮,任學(xué)平.置氫TC21鈦合金粉末模壓成形燒結(jié)組織性能研究[J].稀有金屬材料與工程,2009,38(11):1924~1928.[TianYaqiang, Hou Hongliang, Ren Xueping. Microstructure and Properties of Die Forming and Sintering of[J]. Rare Metal Materials and Engineering,2009,38(11):1924~1928.]
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  • 收稿日期:2008-12-20
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