期刊文献+

激光立体成形工艺对TC11钛合金组织和力学性能的影响 被引量:6

Influences of Laser Solid Forming Process on Microstructure and Mechanical Properties of TC11 Titanium Alloy
原文传递
导出
摘要 采用金相观察、X射线衍射及布氏硬度、室温冲击等分析测试方法,研究了激光立体成形工艺对飞行器结构材料TC11钛合金组织和力学性能的影响。结果发现,采用不同激光功率制备试样微观组织均为网篮组织,小功率试样微观组织编织更细密,α板条宽度更小。小功率试样比大功率试样高约15 HB,二者均高于锻件标准(GJB2744A-2007)硬度范围。小功率试样冲击韧性基本达到锻件标准,而大功率试样冲击韧性低于该锻件标准,在冲击载荷下前者的失效方式为穿晶韧性断裂,而后者的失效方式则由穿晶韧性断裂逐渐向α板条解理断裂过渡。 The microstructure and mechanical properties of laser solid formed (LSF) TCll titanium alloy, as one of the candidate materials for aircraft structures, was investigated with Optical Microscopy (OM), X-Ray Diffraction (XRD), Brinell hardness (HB) and room temperature impact test. The microstructure of LSF samples with different laser power both exhibited basket weave, and low power forming samples were consisted of finer acicular a and a-α-β basket weave compared with those of high power forming samples. The Brinell hardness of different laser power forming samples both surpassed the forging standard of GJB2744A-2007, and the Brinell hardness of low power forming samples was higher than that of high power forming samples about 15HB. Impact toughness of low power forming samples reached the forging standard, While that of high power forming samples was below to the standard. And at the impact load their failure mode were transgranular ductile fracture and gradually transiting from transgranular ductile fracture to a lath cleavage fracture, respectively.
出处 《应用激光》 CSCD 北大核心 2012年第6期479-483,共5页 Applied Laser
基金 国家自然科学基金资助项目(项目编号:50871089)
关键词 激光立体成形 TC11钛合金 微观组织 硬度 冲击韧性 laser solid forming TC11 titanium alloy: microstructure hardness impact toughness
  • 相关文献

参考文献8

二级参考文献84

共引文献572

同被引文献58

引证文献6

二级引证文献50

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部