Scholarlink

<p>This study demonstrates the effectiveness of a single-step heat treatment (850&#xa0;°C, 4 hours) for additively manufactured (AM) Haynes 282 components. Mechanical testing reveals that this approach achieves a balance of yield strength (YS) and ductility comparable to traditional multi-stage heat treatments for wrought Haynes 282, with a YS of approximately 1 GPa and ductility of 20 to 30 pct at room temperature, while reducing property anisotropy. Microstructural analysis shows that the developed single-step heat treatment results in the formation of uniformly distributed <i>γ</i>′ precipitates (~ 40&#xa0;nm) and grain boundary carbides (presumably Cr-rich M<sub>23</sub>C<sub>6</sub> and Mo-rich M<sub>6</sub>C), which provide intragranular and intergranular strengthening. These features are similar to those achieved through conventional multi-stage heat treatments. Compared to conventional methods, this single-step process reduces the total heat treatment time by over 50 pct, eliminates the solutionizing step, and simplifies processing complexity—making it suitable for complex near-net-shape AM components.</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

Heat Treatment of Additively Manufactured Nickel-Based Superalloy Haynes 282

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年6月27日

查看全文
  • Janith Wanni,
  • Phalgun Nelaturu,
  • Zahabul Islam,
  • Ankur Agrawal,
  • Anthony M. Grotjan,
  • Mark H. Anderson,
  • Dan J. Thoma

摘要

This study demonstrates the effectiveness of a single-step heat treatment (850 °C, 4 hours) for additively manufactured (AM) Haynes 282 components. Mechanical testing reveals that this approach achieves a balance of yield strength (YS) and ductility comparable to traditional multi-stage heat treatments for wrought Haynes 282, with a YS of approximately 1 GPa and ductility of 20 to 30 pct at room temperature, while reducing property anisotropy. Microstructural analysis shows that the developed single-step heat treatment results in the formation of uniformly distributed γ′ precipitates (~ 40 nm) and grain boundary carbides (presumably Cr-rich M23C6 and Mo-rich M6C), which provide intragranular and intergranular strengthening. These features are similar to those achieved through conventional multi-stage heat treatments. Compared to conventional methods, this single-step process reduces the total heat treatment time by over 50 pct, eliminates the solutionizing step, and simplifies processing complexity—making it suitable for complex near-net-shape AM components.