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Effects of laser welding parameters on the joint of dental pure titanium
Author(s): 
Pages: 41-44,40
Year: Issue:  1
Journal: APPLIED LASER

Keyword:  齿科激光焊组织性能;
Abstract: 采用电子万能试验机测试钛金属激光焊接头的力学性能.结果表明,随着激光光斑直径的减小或功率的增加,接头熔深增加,强度提高;并且随着激光功率密度的增大,接头强度呈增大趋势.进一步从激光功率密度的角度分析,光斑直径比激光功率对接头强度的影响更大,激光光斑直径为0.7mm、功率1.6kW时,获得接头性能较佳.金相组织观察显示,接头组织致密,未发现有夹杂和微裂纹等缺陷,接头拉伸断口呈韧性断裂特征,断裂区有大量的韧窝存在.
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