| 船用TA2钛合金晶粒尺寸的超声声速评定 |
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| 引用本文： | 卢超,邬冠华,王伏喜,张维,宋凯.船用TA2钛合金晶粒尺寸的超声声速评定[J].舰船科学技术,2005,27(4):78-80. |
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| 作者姓名： | 卢超 邬冠华 王伏喜 张维 宋凯 |
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| 作者单位： | 南昌航空工业学院,江西,南昌,330034;洛阳船舶材料研究所,河南,洛阳,471039 |
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| 基金项目： | 江西省测控工程研究中心基金资助项目（ZX200204005）;国防军工技术基础预研项目 |
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| 摘 要： | 通过对超声纵波声速的测量来评定船用TA2钛合金的平均晶粒尺寸。采用热处理改变了TA2合金试样的晶粒尺寸。实验结果表明，用5P14Z探头测得的纵波声速与晶粒尺寸之间有很好的线性关系。与奥氏体不锈钢、低碳钢等材料不同，随着TA2合金试样晶粒尺寸的增大，纵波声速增大。利用在超声纵波声速和金相测定的晶粒尺寸之间建立的关系图，能够无损评价TA2合金的晶粒尺寸。
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| 关 键 词： | 船用TA2钛合金 晶粒尺寸 超声检验 声速 |
| 文章编号： | 1672-7649（2005）04-0078-03 |
| 收稿时间： | 2004-09-12 |
| 修稿时间： | 2004-09-12 |
Ultrasonic velocity measurements for estimation of grain size in TA2 ship titanium alloy |
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| LU Chao,WU Guan-hua,WANG Fu-xi,ZHANG Wei,SONG Kai.Ultrasonic velocity measurements for estimation of grain size in TA2 ship titanium alloy[J].Ship Science and Technology,2005,27(4):78-80. |
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| Authors: | LU Chao WU Guan-hua WANG Fu-xi ZHANG Wei SONG Kai |
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| Abstract: | Ultrasonic velocity measurements have been used to estimate average grain size in TA2 ship titanium alloy. The grain sizes of test parts were changed by heat treatment. The experiment results indicted that there existed fairly good linearity between the grain sizes and longitudinal wave velocities when the measurements were done with 5P14Z probe. Different from the materials such as austenitic stainless steels, low carbon steels etc, the longitudinal velocity of TA2 alloy increased as the grain size increased. Master graph relating ultrasonic velocity with metallographically obtained grain size has been generated. Using the graph, the grain size of TA2 alloy could be nondestructive evaluated. |
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| Keywords: | TA2 titanium alloy of ship grain size ultrasonic inspection sound velocity |
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