脉冲电流调控金属固体中的残余应力
Controlling the Residual Stress in Metallic Solids by Pulsed Electric Current
脉冲电流调控金属固体中的残余应力 |
| 张新房, 向思奇, 易坤, 郭敬东 |
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Controlling the Residual Stress in Metallic Solids by Pulsed Electric Current |
| ZHANG Xinfang, XIANG Siqi, YI Kun, GUO Jingdong |
| 图10 1080钢在相同温度下有无电流的残余应力降低量,其中,EPT1、EPT2、EPT3代表3个初始残余应力分别为361.3、412.6和463.6 MPa的样品经电流密度为1.5 A/mm2的脉冲电流(稳定温度190℃)处理1 h,HT1、HT2、HT3代表3个初始残余应力为435.3、344.7和402.0 MPa的样品在190℃处理1 h,EPT4代表初始残余应力为442.4 MPa的样品在电流密度为2.8 A/mm2的脉冲电流处理1 h,HT4初始残余应力为452.3 MPa的样品在310℃处理1 h |
| Fig.10 Residual stress reduction of 1080 steel with or without current at the same temperature. EPT1, EPT2, and EPT3 (the initial residual stresses were 361.3, 412.6, and 463.6 MPa, respectively) are pulsed electric current treatment with current density of 1.5 A/mm2 for 1 h; HT1, HT2, and HT3 (the initial residual stresses were 435.3, 344.7, and 402.0 MPa, respectively) are heat trearment at 190oC for 1 h; EPT4 (the initial residual stress was 442.4 MPa) is pulsed electric current treatment with current density of 2.8 A/mm2 for 1 h; HT4 (the initial residual stress was 452.3 MPa) is heat treatment at 310oC for 1 h |
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