| 两种典型热处理工艺对TC18钛合金组织性能的影响 |
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| 引用本文： | 韩栋,张鹏省,毛小南,卢亚锋,奚正平,杨建朝.两种典型热处理工艺对TC18钛合金组织性能的影响[J].钛工业进展,2009,26(6):19-22. |
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| 作者姓名： | 韩栋 张鹏省 毛小南 卢亚锋 奚正平 杨建朝 |
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| 作者单位： | 西北有色金属研究院,陕西,西安,710016 |
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| 基金项目： | 国家科技支撑计划项目，国家973计划项目 |
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| 摘 要： | 采用两阶段退火和固溶强化两种典型的热处理制度，通过力学性能检测、显微组织分析和XRD物相分析，系统研究了整体热处理工艺对TC18钛合金大型锻件组织和性能的影响。结果表明：两阶段退火态的组织不仅满足强度和塑性匹配，而且断裂韧性墨。值可达75MPa·m^1/2；固溶强化热处理后的组织虽具有比前者更高的强度，但塑性损失较大，断裂韧性Kk值较低。
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| 关 键 词： | TC18钛合金 整体热处理 两阶段退火 固溶强化 显微组织 力学性能 |
Effect of Two Typical Heat Treatments on Microstructure and Properties of TC18 Titanium Alloy |
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| Authors: | Han Dong Zhang Pengsheng Mao Xiaonan Lu Yafeng Xi Zhengping Yang Jianchao |
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| Affiliation: | (Northwest Institute for Nonferrous Metal Research, Xi＇ an 710016, China) |
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| Abstract: | The influences of variant heat treatment processes （two-stage annealing and solution strengthening） on the mechanical properties and the microstructure of TC18 titanium alloy large forgings were investigated through detections of mechanical properties as well as microstructure ＆ XRD phase analyses. The results show that TC18 forgings have best matching of strength and plasticity after two-stage annealing process, and Ktc value could be high as 75 MPa · m1/2. Though the tensile strength of the forgings obtained is higher after solution strengthening process, both the plasticity and fracture toughness property get reduced. |
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| Keywords: | TC18 titanium alloy whole heat-treatment two-stage annealing solution strengthening microstructure mechanical property |
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