【摘要】：以42CrMo模具鋼為研究對(duì)象,采用拉伸試驗(yàn)、沖擊試驗(yàn)、硬度測(cè)試和顯微組織分析等方法,研究了淬火溫度和回火溫度對(duì)模具鋼組織與力學(xué)性能的影響。結(jié)果表明,200℃低溫回火時(shí),隨著淬火溫度升高,模具鋼的抗拉強(qiáng)度先上升后降低,而伸長(zhǎng)率、斷面收縮率、沖擊韌度呈現(xiàn)下降趨勢(shì);600℃高溫回火時(shí),隨著淬火溫度的升高,模具鋼的抗拉強(qiáng)度在1 040℃前略有降低,而伸長(zhǎng)率、斷面收縮率、沖擊韌度和硬度整體呈現(xiàn)下降的趨勢(shì)。200℃低溫回火后的模具鋼的強(qiáng)度滿足要求,但是伸長(zhǎng)率和沖擊韌度均低于標(biāo)準(zhǔn)要求;600℃高溫回火后,模具鋼的強(qiáng)度、塑性和韌性都能滿足冷作模具鋼對(duì)基材的要求。
[Abstract]:The effects of quenching temperature and tempering temperature on the microstructure and mechanical properties of 42CrMo die steel were studied by means of tensile test, impact test, hardness test and microstructure analysis. The results show that the tensile strength of die steel increases first and then decreases with the increase of quenching temperature at 200 鈩，

本文編號(hào)：2294117