固溶温度对022Cr22Ni5M03N双相不锈钢组织和性能的影响

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试验研究了1000℃4h和1060℃4h固溶处理后022Cr22Ni5Mo3N钢Φ75 mm材的组织和力学性能.结果 表明,022Cr22Ni5Mo3N钢Φ75 mm材终锻温度970℃空冷的组织(体积分数)约为铁素体31%,奥氏体56%,析出物13%;1000℃4h固溶后为铁素体38%,奥氏体60%,析出物2%;1060℃4h固溶后铁素体50%,奥氏体50%,该钢通过采用1060℃固溶后,拉伸断裂强度731 MPa,延伸率38%,冲击功AKV(-40℃)76 ~81 J,满足标准要求.
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