Scholarlink

<p>This investigation delves into the influence of heat treatment on the ambient temperature and high-temperature mechanical properties of nickel-based 718 superalloy additive-manufactured through laser-directed energy deposition. The findings indicate that direct aging heat treatment leads to enhanced strength in comparison to as-built condition for all straining temperatures. In contrast to ambient response, elevated temperature deformation of both the as-built and heat-treated conditions result in lower strength levels exhibiting serrated flow response. At temperatures over 700&#xa0;°C, the heat-treated condition displays lack of hardening with a near elastic-perfectly plastic behavior. Fracture surface examinations reveal a mixed type of fracture, where the manifestation of cleavage planes increase after heat treatment.</p> Graphical abstract <p></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

On the high-temperature flow response of additive-manufactured and heat-treated Inconel 718 superalloy

  • 期刊论文

  • 发表日期：

    2025年6月23日

查看全文
  • M. Farhan Raza,
  • Guney Guven Yapici

摘要

This investigation delves into the influence of heat treatment on the ambient temperature and high-temperature mechanical properties of nickel-based 718 superalloy additive-manufactured through laser-directed energy deposition. The findings indicate that direct aging heat treatment leads to enhanced strength in comparison to as-built condition for all straining temperatures. In contrast to ambient response, elevated temperature deformation of both the as-built and heat-treated conditions result in lower strength levels exhibiting serrated flow response. At temperatures over 700 °C, the heat-treated condition displays lack of hardening with a near elastic-perfectly plastic behavior. Fracture surface examinations reveal a mixed type of fracture, where the manifestation of cleavage planes increase after heat treatment.

Graphical abstract