摘要
研究了Ｆｅ－１４６Ｃ钢的激光熔凝组织和性能．结果表明，其组织可分为熔化区（粗大Ｍ＋大量Ａ′→细小Ｍ＋Ａ′）．热影响区（Ｍ＋Ａ′）和基体（Ｐ）三部分，各区尺寸取决于激光功率、扫描速度和基体温度，熔化区存在碳的烧损和氧化现象。
The structures and properties of the laser melted layer of Fe-1 46C steel have been studied.The results show that there are three zones after laser treatment,melted layer(coarseM+A′→M+A′),heat affected zone(M+A′)and parent metal(P).The size of every zone depends on laser power,scanning rate and the temperature of parent metal.The content of carbon is decreased and the content of oxygen is increased in melted layer.The effect of hardening is obtained after laser treatment.
出处
《大连铁道学院学报》
1997年第2期74-78,共5页
Journal of Dalian Railway Institute
