强激光与粒子束, 2014, 26 (8): 089001, 网络出版: 2014-07-30   

激光沉积修复TA15合金的组织和力学性能

Microstructure and mechanical properties of laser deposition repaired TA15 alloy
作者单位
沈阳航空航天大学 航空制造工艺数字化国防重点学科实验室, 沈阳 110136
摘要
采用激光沉积修复方法对TA15槽损伤试样进行了修复试验, 考察了修复试样的组织和力学特点, 发现激光修复试样组织是由基材的双态组织经由热影响区过渡到修复区的网篮组织。修复区组织为粗大的原始柱状β晶, 晶粒内为α/β网篮组织, 晶内α片层取向随机, 宽0.4~0.5 μm。分析了修复区和坡面存在熔合不良缺陷的原因, 并给出了纠正措施。修复试样的室温静拉伸结果表明, 试样的抗拉强度接近工业锻件水平, 表明修复区与基材之间形成了致密冶金结合, 但由于修复区粗大柱状晶组织, 试样的冲击韧性比基材稍差。
Abstract
Researches on the laser deposition repairing of TA15 alloy forgings having groove damage were investigated, and the microstructure characteristic of laser deposition repairing component was analyzed. The repaired component experienced a continuous microstructural transition from duplex microstructure with equiaxial α and lamellar α/β in the repaired substrate to the epitaxial coarser columnar β with basket weave α/β through heat-affected zone. And the repaired zone was characterized by a fine α/β lamellar microstructure with various random orientations, and the α was 0.4-0.5 μm. It was found that large sloped angle could cause ill bonding along the groove side slope, and a corrective action was given to avoid this defects. The results of the repaired groove sample tensile test at room temperature show that tensile strength is approaching to the forged TA15 alloy, but its impact toughness is a little lower than that of the substrate for its coarser columnar β.

钦兰云, 卞宏友, 杨光, 宋海浩, 王维, 任宇航. 激光沉积修复TA15合金的组织和力学性能[J]. 强激光与粒子束, 2014, 26(8): 089001. Qin Lanyun, Bian Hongyou, Yang Guang, Song Haihao, Wang Wei, Ren Yuhang. Microstructure and mechanical properties of laser deposition repaired TA15 alloy[J]. High Power Laser and Particle Beams, 2014, 26(8): 089001.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!