热加工工艺
熱加工工藝
열가공공예
HOT WORKING TECHNOLOGY
2009年
18期
122-123,126
,共3页
45钢%亚温淬火%力学性能%显微组织
45鋼%亞溫淬火%力學性能%顯微組織
45강%아온쉬화%역학성능%현미조직
45 steel%subcritical quenching%mechanical properties%microstructure
研究了45钢亚温淬火组织与性能,分析了显微组织与性能的关系.结果表明:在740～820℃,随淬火温度升高,45钢淬火组织中铁素体量逐渐减少:其分布形态也南块状、网状变成细小颗粒状,材料的综合性能得以改善.实验得出,最合理的亚温淬火工艺是(790±5)℃淬火,(550±10)℃回火.
研究瞭45鋼亞溫淬火組織與性能,分析瞭顯微組織與性能的關繫.結果錶明:在740～820℃,隨淬火溫度升高,45鋼淬火組織中鐵素體量逐漸減少:其分佈形態也南塊狀、網狀變成細小顆粒狀,材料的綜閤性能得以改善.實驗得齣,最閤理的亞溫淬火工藝是(790±5)℃淬火,(550±10)℃迴火.
연구료45강아온쉬화조직여성능,분석료현미조직여성능적관계.결과표명:재740～820℃,수쉬화온도승고,45강쉬화조직중철소체량축점감소:기분포형태야남괴상、망상변성세소과립상,재료적종합성능득이개선.실험득출,최합리적아온쉬화공예시(790±5)℃쉬화,(550±10)℃회화.
The microstructure and properties of 45 steel after subcritically-quenching were studied.The relationship between the microstructure and properties were discussed.The results show that the ferrite contents of 45 steel quenched microstructure decrease gradually in the temperature range of 740 ～820 ℃ and ferrite distributing form changes from block,mesh into a small mesh granular in 45 steel quenched microstructure.General properties of materials improve.The experiment obtains the most reasonable subcritical quenching process:quenching at 790 ℃ for 5 h,tempering at 550 ℃ for 10 h.
