Scholarlink

<p>Brass alloys constitute a broad class of engineering materials with extensive use in the manufacturing of components destined to domestic, industrial, engineering applications and even artistic/decorative installations. Apart from the good mechanical properties and machinability, their established utilization in drinking water installations underscores the importance of corrosion performance in lifetime and health/safety (H&amp;S) impact. The enforcement of recent environmental and H&amp;S regulations that restrict Pb as an alloying element has served as the stepping stone for the development of new Pb-free brass alloys. The present work is part of a long-term project focused on the study of the structure–properties–machinability relationships of conventional leaded and low- or lead-free brass alloys for high performance and sustainable manufacturing operations, related to automatic and high speed/precision machining processes for the production of final components (fittings, valves, bolts, etc.). In the frame of the current research, the comparative corrosion behavior of two leaded (namely CW617N-CuZn40Pb2 and CW602N-CuZn36Pb2As) and two low-leaded/lead-free alloys (namely CW511L-CuZn38As and CW724R-CuZn21Si3P) is investigated, following different corrosion tests: (i) stress corrosion cracking (SCC) according to ASTM B858, (ii) dezincification resistance according to EN ISO 6509 standards and (iii) internal lab-based electrochemical testing. Based on the present test results and material conditions, the Pb-free CW724R-CuZn21Si3P alloy exhibited optimal corrosion behavior compared to the rest of the alloys examined in this study. The results will be used for potential alloy design and thermomechanical process modifications and revisions for future corrosion performance improvement optimization.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Comparative Degradation Mechanisms of Machinable Brass Alloys Under Different Corrosion Testing Conditions

  • 期刊论文

  • 发表日期：

    2026年3月30日

查看全文
  • Eva Stachouli,
  • Zisimos Zacharopoulos,
  • Andreas Rikos,
  • Sofia Papadopoulou,
  • Ioannis Daniilidis,
  • George A. Pantazopoulos

摘要

Brass alloys constitute a broad class of engineering materials with extensive use in the manufacturing of components destined to domestic, industrial, engineering applications and even artistic/decorative installations. Apart from the good mechanical properties and machinability, their established utilization in drinking water installations underscores the importance of corrosion performance in lifetime and health/safety (H&S) impact. The enforcement of recent environmental and H&S regulations that restrict Pb as an alloying element has served as the stepping stone for the development of new Pb-free brass alloys. The present work is part of a long-term project focused on the study of the structure–properties–machinability relationships of conventional leaded and low- or lead-free brass alloys for high performance and sustainable manufacturing operations, related to automatic and high speed/precision machining processes for the production of final components (fittings, valves, bolts, etc.). In the frame of the current research, the comparative corrosion behavior of two leaded (namely CW617N-CuZn40Pb2 and CW602N-CuZn36Pb2As) and two low-leaded/lead-free alloys (namely CW511L-CuZn38As and CW724R-CuZn21Si3P) is investigated, following different corrosion tests: (i) stress corrosion cracking (SCC) according to ASTM B858, (ii) dezincification resistance according to EN ISO 6509 standards and (iii) internal lab-based electrochemical testing. Based on the present test results and material conditions, the Pb-free CW724R-CuZn21Si3P alloy exhibited optimal corrosion behavior compared to the rest of the alloys examined in this study. The results will be used for potential alloy design and thermomechanical process modifications and revisions for future corrosion performance improvement optimization.