• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >Influence of Friction Stir Processing on Wear, Corrosion, and Fracture Toughness Behavior of 2507 Super Duplex Stainless Steel
【24h】

Influence of Friction Stir Processing on Wear, Corrosion, and Fracture Toughness Behavior of 2507 Super Duplex Stainless Steel

机译：摩擦搅拌加工对2507超双水不锈钢磨损，腐蚀和断裂韧性行为的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Super duplex stainless steels (SDSS) are used in offshore applications and oil/gas plants operating under severe service conditions due to their superior mechanical and electrochemical properties. Fracture toughness, wear and corrosion resistance of a material depends largely on its microstructure and can be improved by refining the latter. Friction stir processing (FSP) can be employed to refine the microstructure of the material, resulting in superior fracture toughness, wear, and corrosion resistance. In the present research, SAF 2507 SDSS was subjected to FSP with optimized processing parameters to study the influence of FSP on fracture toughness, wear, and corrosion resistance of the material. It was observed that FSP refined alloy grains by decreasing the grain size from an average of 160 mu m in the base metal to 2-30 mu m in the stir zone. Refinement of grains increased the hardness of the material, which enhanced its wear resistance by more than 15%. Wear track and debris analysis revealed the change in wear mechanism of the processed material. FSP also modified the surface composition of processed material, which served to improve its corrosion resistance by more than 80%. Morphology of the corroded surfaces of base and processed material showed that the processed material was more resistant to corrosive attacks than base material. FSP enhanced the grain boundaries in the processed region which improved the fracture toughness after exposure to accelerated corrosion by about 26%. Fractographic study revealed that processed material had brittle fracture behavior while base material had ductile fracture behavior.
机译：超级双相不锈钢（SDS）由于其优越的机械和电化学性能，被用于海上应用和在恶劣工况下运行的石油/天然气工厂。材料的断裂韧性、耐磨性和耐腐蚀性在很大程度上取决于其微观结构，可以通过细化后者来提高。搅拌摩擦加工（FSP）可用于细化材料的微观结构，从而获得优异的断裂韧性、耐磨性和耐腐蚀性。在本研究中，SAF 2507 SDSS通过优化工艺参数进行FSP，以研究FSP对材料断裂韧性、磨损和耐腐蚀性的影响。观察到，FSP通过将母材中的平均晶粒尺寸从160μm减小到搅拌区中的2-30μm来细化合金晶粒。晶粒细化提高了材料的硬度，耐磨性提高了15%以上。磨损轨迹和碎屑分析揭示了加工材料磨损机制的变化。FSP还改变了加工材料的表面成分，从而使其耐腐蚀性提高了80%以上。基材和加工材料的腐蚀表面形貌表明，加工材料比基材更耐腐蚀侵蚀。FSP增强了加工区的晶界，从而使暴露于加速腐蚀后的断裂韧性提高了约26%。断口研究表明，加工材料具有脆性断裂行为，而基材具有韧性断裂行为。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号