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掃描方式和退火熱處理對(duì)激光快速成形TA15鈦合金組織與性能的影響
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國(guó)家自然科學(xué)基金（50871022）


Effect of Scanning Pattern and Annealing Heat Treatment on Microstructures and Mechanical Properties of TA15 Titanium Alloy Formed by Laser Rapid Forming Process
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    摘要:

    分別采用單向掃描和編織掃描方式，激光快速成形了兩個(gè)TA15鈦合金厚壁零件，研究了掃描方式、退火熱處理對(duì)TA15鈦合金組織和拉伸力學(xué)性能的影響。結(jié)果表明，激光快速成形TA15鈦合金具有良好的金相組織熱穩(wěn)定性。編織掃描方式可顯著細(xì)化TA15鈦合金的金相組織，與單向掃描方式制備的TA15鈦合金相比，編織掃描方式制備的TA15鈦合金具有更高的力學(xué)性能。兩種掃描方式制備的TA15鈦合金，其沉積態(tài)和熱處理態(tài)的拉伸性能具有各向異性，經(jīng)940 ℃/1 h/AC熱處理后，兩種掃描方式制備的 TA15鈦合金沿水平方向和垂直方向的拉伸力學(xué)性能均超過(guò)TA15鈦合金退火鍛件的力學(xué)性能標(biāo)準(zhǔn)。

    Abstract:

    Two thick-wall parts of TA15 alloy were formed by laser rapid forming (LRF) process using unidirectional scanning pattern and weaving scanning pattern, respectively. The investigation on the effect of scanning pattern and heat treatment on the microstructures and the tensile properties of the LRFed TA15 alloy was carried out. Results show that the LRFed TA15 alloy has a good thermal stability of metallographic microstructures. The tensile properties of TA15 alloy formed by the weaving scanning pattern are superior to that of TA15 alloy fabricated by the undirectional scanning pattern due to finer metallographic microstructures of TA15 alloy obtained by the weaving scanning pattern. The tensile properties of as-deposited and heat-treated TA15 alloy prepared by the both scanning patterns are anisotropic, after the heat treatment of 940 °C/1 h/AC，the tensile properties of the formed TA15 alloy are better than that of the wrought annealed TA15 alloy.

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席明哲,高士友,劉 博,李小榕.掃描方式和退火熱處理對(duì)激光快速成形TA15鈦合金組織與性能的影響[J].稀有金屬材料與工程,2014,43(2):445~449.[Xi Mingzhe, Gao Shiyou, Liu Bo, Li Xiaorong. Effect of Scanning Pattern and Annealing Heat Treatment on Microstructures and Mechanical Properties of TA15 Titanium Alloy Formed by Laser Rapid Forming Process[J]. Rare Metal Materials and Engineering,2014,43(2):445~449.]
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  • 收稿日期:2013-01-15
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  • 在線發(fā)布日期: 2014-06-03
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