【摘要】：為研究MP35N合金時效強化規(guī)律及機制,對MP35N合金進行84.18%的冷軋變形后,進行時效處理研究.在萬能拉伸機上進行力學(xué)性能測試,用OM、SEM、TEM和EDS進行組織分析和微觀成分測試.實驗結(jié)果表明:在500℃時效4 h時,顯微硬度達到最大值704.26 HV,抗拉強度為2641.16 MPa,與冷軋態(tài)相比,分別提高了30.44%和37.41%;該合金經(jīng)時效后冷軋撕裂孔洞愈合,在400℃時效后出現(xiàn)了由34個厚度為3 nm左右的細小孿晶組成的"孿晶簇";溫度升高到500℃,孿晶尺寸變大、交錯,"孿晶簇"消失.未發(fā)現(xiàn)Mo原子在孿晶處處偏聚,時效過程中形成的納米級片狀孿晶起到主要的強化作用.
[Abstract]:In order to study the aging hardening law and mechanism of MP35N alloy, the aging treatment of MP35N alloy after 84.18% cold rolling deformation was studied. Mechanical properties were tested on universal drawing machine, microstructure and microstructure were analyzed by OM,SEM,TEM and EDS. The experimental results show that when aging at 500 鈩，

本文編號：2395004