本文關(guān)鍵詞： H鋼 正交試驗法 熱處理　出處：《熱加工工藝》2017年02期 　論文類型：期刊論文

【摘要】：利用正交試驗法研究了淬火、第一次回火、第二次回火對H13鋼組織和性能的影響。結(jié)果表明:第二次回火對材料的強度和塑性影響最為顯著,其次為淬火,最后是第一次回火;隨淬火溫度升高,抗拉和屈服強度升高,斷面收縮率先升高后降低,伸長率降低;強塑性隨第一次和第二次回火溫度變化的趨勢是一樣的,隨回火溫度升高強度均下降,塑性升高。H13鋼淬火后獲得板條馬氏體,淬火溫度升高至1070℃時,馬氏體開始明顯粗化;回火后馬氏體轉(zhuǎn)變?yōu)榛鼗瘃R氏體,部分馬氏體會產(chǎn)生回復(fù)再結(jié)晶,在馬氏體板條間出現(xiàn)大量碳化物。
[Abstract]:The effects of quenching, first tempering and second tempering on the microstructure and properties of H13 steel were studied by orthogonal test. The results showed that the second tempering had the most significant effect on the strength and plasticity of the material, followed by quenching and finally the first tempering. With the increase of quenching temperature, the tensile strength and yield strength increase, the cross section shrinkage increases first and then decreases, and the elongation decreases, and the change trend of strong plasticity with the first and second tempering temperature is the same, and the strength decreases with the increase of tempering temperature. After quenching, lath martensite is obtained in the steel. When the quenching temperature rises to 1070 鈩，

本文編號：1545733