THE EXPERIMENTS STUDY ON INTEGRITY ASSESSMENT OF DUCTILE IRON MODIFIED BY LASER WITH SPACE ARRAY

摘要：

Pulsed laser beams with two-dimensional array distribution was used to modify surface processing for ductile iron. France IQL-10YAG pulse LASER with 1.3 mm×1.3 mm spotbeam was applied to these experiments. In which pulse width 24ms, pulse repeat frequency 4Hz, and single pulse were adopted. In this paper integrity assessing methods of modified effect were studied and discussed by experiments including case depth, microhardness distribution and wearing test method. Of which a statistical method of microhardness distribution was adopted to evaluate reasonably the microhardness distribution character and further used to evaluate the case depth. On the other hand, a suitable method for wearing test was analyzed. And that was a integrity assessment method for wearing test by establishing the curve of loss weight vs depth at a given time and load in the whole depth of modified layer.

作者: Ba Fahai Wu Wei Yu Gang

作者单位: Shanghai Research Institute of Material, Shanghai, 200437, P.R.China,

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）