【摘要】：利用金相顯微鏡、掃描電鏡、Thermo-Calc熱力學(xué)軟件、洛氏硬度儀和沖擊試驗(yàn)機(jī)等研究了淬火溫度對(duì)高氮軸承鋼30Cr15Mo1N組織和力學(xué)性能的影響規(guī)律。結(jié)果表明,隨著淬火溫度升高,鋼中析出相(M_(23)C_6和M_2N)逐漸溶解,基體中元素分布趨于均勻。在淬火溫度低于1 050℃時(shí),原始奧氏體晶粒未明顯長(zhǎng)大,高于1 050℃后晶粒急劇長(zhǎng)大。隨著淬火溫度的升高,硬度先升高后降低,在1 000℃淬火后硬度最高。經(jīng)低溫處理后,30Cr15Mo1N的硬度明顯提高,且并未發(fā)生顯著降低。在900℃淬火后高氮軸承鋼30Cr15Mo1N的沖擊韌性最佳,而1 000及1 100℃淬火后韌性大幅度降低。
[Abstract]:The effect of quenching temperature on 30Cr15Mo1N microstructure and mechanical properties of high nitrogen bearing steel was studied by metallographic microscope, scanning electron microscope, Thermo-Calc thermodynamics software, Rockwell hardness tester and impact tester. The results show that the precipitates (M _ (23) C _ 6 and M _ S _ 2N) gradually dissolve with the increase of quenching temperature, and the distribution of elements in the matrix tends to be uniform. When the quenching temperature is below 1 050 鈩，

本文編號(hào)：2399614