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材料工程  2018, Vol. 46 Issue (12): 144-150    DOI: 10.11868/j.issn.1001-4381.2016.000406
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
激光沉积修复TA15钛合金微观组织及力学性能
邢如飞1, 许星元2, 黄双君2, 王磊2, 周松2, 许良2
1. 华晨汽车集团控股有限公司, 沈阳 110869;
2. 沈阳航空航天大学 机电工程学院, 沈阳 110136
Microstructure and Mechanical Properties of Laser Deposition Repaired TA15 Titanium Alloy
XING Ru-fei1, XU Xing-yuan2, HUANG Shuang-jun2, WANG Lei2, ZHOU Song2, XU Liang2
1. Huachen Automotive Group Holdings Co., Ltd., Shenyang 110869, China;
2. School of Mechatronics Engineering, Shenyang Aerospace University, Shenyang 110136, China
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摘要 采用激光沉积修复技术对两种误加工缺陷的TA15钛合金锻件进行修复实验,研究固溶时效热处理对修复试样显微组织和室温拉伸性能的影响。结果表明:退火态整个热影响区呈现了基体的双态组织到激光修复区网篮组织的渐变,修复区有粗大的原始柱状β晶粒,晶粒内有细小的α/β片层组织;固溶时效后,高温β相发生马氏体转变,得到了初生α相和六方马氏体α'两种组织,部分晶界破碎球化消失,在破碎的晶界上可见大量的α'集束。退火态修复试样的强度均高于锻件基体,而塑性则低于锻件基体;固溶时效态槽修复和体修复试样抗拉强度较退火态均有明显提高。
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邢如飞
许星元
黄双君
王磊
周松
许良
关键词 激光沉积修复钛合金热处理显微组织力学性能    
Abstract:The technology of laser deposition repair was used to repair two kinds of mis-machining defects in TA15 titanium alloy forgings. The effect of solution-aging treatment on microstructure and tensile properties of TA15 titanium alloy at room temperature was investigated. The results show that the entire heat affected zone of annealing state presents a continuous microstructural transition from bimodal structure to basket weave characterized by coarse columnar β with fine α/β lamellar structure. After solution-aging treatment, martensitic transformation occurs in β phase, the primary α phase and hexagonal martensite α' are obtained, a part of continuous prior α boundary is broken, becomes spheroidized and illegible, and α laths grow up to bunch on some broken boundary. The strength of annealing sample is higher than that of forging, but the plasticity is lower. The tensile properties of groove repair sample and body repair sample after solution-aging are obviously improved compared with the annealing.
Key wordslaser deposition repair    titanium alloy    heat treatment    microstructure    mechanical property
收稿日期: 2016-04-06      出版日期: 2018-12-18
中图分类号:  TG166.5  
通讯作者: 许良(1965-),男,教授,主要从事航空材料结构强度与疲劳方面研究工作,联系地址:辽宁省沈阳市沈北新区道义南大街37号沈阳航空航天大学机电工程学院(110136),E-mail:sysyxu@163.com     E-mail: sysyxu@163.com
引用本文:   
邢如飞, 许星元, 黄双君, 王磊, 周松, 许良. 激光沉积修复TA15钛合金微观组织及力学性能[J]. 材料工程, 2018, 46(12): 144-150.
XING Ru-fei, XU Xing-yuan, HUANG Shuang-jun, WANG Lei, ZHOU Song, XU Liang. Microstructure and Mechanical Properties of Laser Deposition Repaired TA15 Titanium Alloy. Journal of Materials Engineering, 2018, 46(12): 144-150.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.000406      或      http://jme.biam.ac.cn/CN/Y2018/V46/I12/144
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