Effect of Swirly Segregation of Mo on Omega Phase Precipitation Behavior and Tensile Property of Ti-12Mo Alloy
Effect of Swirly Segregation of Mo on Omega Phase Precipitation Behavior and Tensile Property of Ti-12Mo Alloy
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DOI：
10.4028/www.scientific.net/kem.551.180
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发表时间：
2013-05
期刊：
影响因子：
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通讯作者：
S. Emura;X. Min;Seiichiro Ii;K. Tsuchiya
中科院分区：
文献类型：
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作者：
S. Emura;X. Min;Seiichiro Ii;K. Tsuchiya
采用热轧工艺在Ti-12质量%Mo合金中引入了Mo的旋流偏析。合金等温时效后，由于Mo的偏析，ω相在合金中均匀析出。研究了旋流偏析和等温时效条件对Ti-12Mo合金室温拉伸性能的影响。抗拉强度受旋流偏析的影响较小。然而，在抗拉强度为1000~1100 MPa的样品中，总延伸率从4~10%极大地提高到20%左右。在所有时效条件下，旋流偏析的样品显示出较大的面积缩小。
Swirly segregation of Mo was introduced in Ti-12 mass% Mo alloys through hot caliber rolling. After isothermal aging of the alloys, ω phase precipitated heterogeneously in the alloys due to the segregation of Mo. The effect of the swirly segregation and isothermal aging condition on room temperature tensile properties of Ti-12Mo alloy was investigated. Tensile strength has been slightly affected by the swirly segregation. However, total elongation has been extremely improved from 4~10 % to around 20 % in the samples with tensile strength of between 1000 and 1100 MPa. Under all aging conditions, samples with the swirly segregation show larger reduction in area.