辛文彬,宋波,胡春林,宋明明,孙桂林

• 1:北京科技大学钢铁冶金新技术国家重点实验室
• 2:北京科技大学冶金与生态工程学院

摘要(Abstract)：

为研究砷及铜砷共存对钢热塑性的影响,利用Gleeble-1500热模拟试验机研究了700~1100℃温度范围内含0.16%As和含0.17%Cu+0.075%As的C-Mn钢的高温塑性行为。结果表明:钢中的Cu、As引起C-Mn钢第Ⅲ脆性区向较高温度区间迁移,然而对高温抗拉强度影响不大。奥氏体+铁素体两相区薄膜状先共析铁素体沿奥氏体晶界析出导致沿晶断裂,但700℃时,由于As促进铁素体的生成,含0.16%As的C-Mn钢为韧性断裂,塑性恢复。奥氏体单相区低温域Cu、As的晶界偏聚导致含Cu、As的C-Mn钢沿晶断裂。

关键词(KeyWords)： 铜砷;热塑性;晶界偏聚

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51174019);; 中央高校基本科研业务费(FRF-SD-12-010A)

作者(Author): 辛文彬,宋波,胡春林,宋明明,孙桂林

DOI: 10.13289/j.issn.1009-6264.2014.07.013

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