Scholarlink

<p>This study aims to evaluate how T6 heat treatment influences the microstructure and microhardness of both cast and additively manufactured (AM) AlSi10Mg. Furthermore, effect of microstructure and microhardness on the machinability of AlSi10Mg was assessed considering the chip morphology, cutting force, machining temperature, and surface roughness. Initially, untreated cast and AM AlSi10Mg exhibited distinctly different microstructures. T6 heat treatment caused substantial alterations in both the microstructure and microhardness of the materials. In both material variants, silicon (Si) experienced fragmentation, followed by spheroidization and subsequent coarsening. However, the heat-treated AM specimens exhibited finer and more uniformly spheroidized Si particles than their cast counterparts. The untreated AM AlSi10Mg showed substantially higher microhardness than the cast alloy. Upon heat treatment, the AM material experienced softening and reduced hardness, whereas the cast material exhibited a notable increase in hardness. Machining the untreated AM alloy generated higher machining temperatures and cutting forces relative to the cast alloy. Post heat treatment, the AM alloy decreased both cutting force and temperature, while the cast alloy exhibited an increase in both parameters. Surface finish was consistently superior in AM specimens compared to cast ones in untreated and heat-treated conditions. Chip morphology also varied significantly: longer chips were produced when milling cast specimens, whereas shorter chips were observed with the AM material. Heat treatment reduced chip size for the cast alloy, while chip morphology remained largely unchanged for the AM material.</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

Influence of heat treatment on the microstructure, microhardness, and machinability of cast and additive manufactured AlSi10Mg

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月26日

查看全文
  • Amith K. V.,
  • Navneet Khanna,
  • Raviraj Shetty,
  • Sathish Rao U.,
  • Gururaj Bolar,
  • Ashwin Polishetty

摘要

This study aims to evaluate how T6 heat treatment influences the microstructure and microhardness of both cast and additively manufactured (AM) AlSi10Mg. Furthermore, effect of microstructure and microhardness on the machinability of AlSi10Mg was assessed considering the chip morphology, cutting force, machining temperature, and surface roughness. Initially, untreated cast and AM AlSi10Mg exhibited distinctly different microstructures. T6 heat treatment caused substantial alterations in both the microstructure and microhardness of the materials. In both material variants, silicon (Si) experienced fragmentation, followed by spheroidization and subsequent coarsening. However, the heat-treated AM specimens exhibited finer and more uniformly spheroidized Si particles than their cast counterparts. The untreated AM AlSi10Mg showed substantially higher microhardness than the cast alloy. Upon heat treatment, the AM material experienced softening and reduced hardness, whereas the cast material exhibited a notable increase in hardness. Machining the untreated AM alloy generated higher machining temperatures and cutting forces relative to the cast alloy. Post heat treatment, the AM alloy decreased both cutting force and temperature, while the cast alloy exhibited an increase in both parameters. Surface finish was consistently superior in AM specimens compared to cast ones in untreated and heat-treated conditions. Chip morphology also varied significantly: longer chips were produced when milling cast specimens, whereas shorter chips were observed with the AM material. Heat treatment reduced chip size for the cast alloy, while chip morphology remained largely unchanged for the AM material.