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gong ju gang ji guang qiang hua ceng te xing
Author(s): 
Pages: 1-10
Year: Issue:  3
Journal: Journal of Xihua University(Natural Science Edition)

Keyword:  强化层工具钢激光处理扫描速度硬度分布温度场功率密度表面强化层表层硬度硬度梯度;
Abstract: 本文研究了功率密度为(1—1.4)×10~4W/Cm~2激光束对几种常用工具钢T10A、9CrSi、GCr15、CrWMn、W18Cr 4V进行扫描后,表面强化层组织、硬度分布。结果表明激光处理表层硬度比普通淬火高,硬度梯度大,硬度沿温度场等效分布。强化层组织一般由2—4层组成,碳化物由表面向内逐渐增多。当扫描速度较小时,表层出现熔变硬化的组织。
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