| Deformation behavior of TC 1 titanium alloy sheet under double-sided pressure |
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| 作者姓名： | 王忠金 宋辉 王哲 |
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| 作者单位： | School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| 摘 要： | In order to investigate the influence of normal stress through thickness on the formability of sheet metal, the viscous pressure bulge（VPB） tests of an annealed TC1 titanium alloy sheet were carried out under two different conditions： double-sided pressure bulging and conventional single-sided pressure bulging. The automated strain analysis, measurement environment （ASAME） and scanning electron microscope（SEM） were used to study the strain distributions and the fracture morphology of bulged specimens. It is found that thickness strain is increased for double-sided pressure bulging specimens, and the limiting dome height（LDH） of double-sided pressure bulging specimens is increased by 31.8% compared with conventional single-sided pressure bulging specimens. The dimples in fracture surface for double-sided pressure bulging specimens are larger and deeper than those for conventional single-sided pressure bulging specimens. The results indicate that normal stress through thickness is helpful in improving the formability of titanium alloy sheet metal.
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| 关 键 词： | 钛合金 薄板 可成型性 变形性质 |
| 收稿时间： | 2007-02-27 |
| 修稿时间： | 2007-06-19 |
Deformation behavior of TC1 titanium alloy sheet under double-sided pressure |
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| WANG Zhong-jin,SONG Hui,WANG Zhe.Deformation behavior of TC 1 titanium alloy sheet under double-sided pressure[J].Transactions of Nonferrous Metals Society of China,2008,18(1):72-76. |
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| Authors: | WANG Zhong-jin SONG Hui WANG Zhe |
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| Affiliation: | School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | In order to investigate the influence of normal stress through thickness on the formability of sheet metal, the viscous pressure bulge(VPB) tests of an annealed TC1 titanium alloy sheet were carried out under two different conditions: double-sided pressure bulging and conventional single-sided pressure bulging. The automated strain analysis, measurement environment (ASAME) and scanning electron microscope(SEM) were used to study the strain distributions and the fracture morphology of bulged specimens. It is found that thickness strain is increased for double-sided pressure bulging specimens, and the limiting dome height(LDH) of double-sided pressure bulging specimens is increased by 31.8% compared with conventional single-sided pressure bulging specimens. The dimples in fracture surface for double-sided pressure bulging specimens are larger and deeper than those for conventional single-sided pressure bulging specimens. The results indicate that normal stress through thickness is helpful in improving the formability of titanium alloy sheet metal. |
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| Keywords: | titanium alloy TC1 sheet bulging double-sided pressure formability |
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