热处理工艺对GTD-450叶片钢力学性能的影响

来源期刊：钢铁2010年第5期

论文作者：杨钢 吴江枫 陈新建 沈红卫 王伟莉

文章页码：61 - 65

关键词：GTD-450叶片钢； 热处理工艺； 力学性能

Key words：GTD-450 blade steel； heat treatment； mechanical property

摘    要：通过力学性能测试和金相显微分析,在实验室研究了热处理工艺及微量合金元素对GTD-450叶片钢力学性能的影响。研究结果表明:在1010~1 070℃淬火时该钢具有较高的强度性能,尤其是弹性极限;该钢满足力学性能指标的回火温度区间较窄,且延长回火时间对塑性的影响不大;微量V可提高高温回火后的强度,但降低了塑性,所以应避免加入。

Abstract: The effect of both heat treatment and micro-alloying element on the properties of GTD-450 blade steel was investigated by means of mechanical property tests and optical micro-structural analysis.Experimental results show that better strength,especial elastic strength can be obtained by quenching at 1010-1070℃ for GTD-450 blade steel.It has narrow tempering temperature range for GTD-450 blade steel to meet the mechanical properties,and has no significant effect on improving ductility by prolonging tempering temperature.Micro-alloying element V should be avoided adding,although it improves the strength at elevated tempering temperature,but reduces the ductility.