Morphology, microstructure, and hardness of titanium (Ti-6Al-4V) blocks deposited by wire-feed additive layer manufacturing (ALM)

作者：Brandl Erhard^*; Schoberth Achim; Leyens Christoph

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2012, 532: 295-307.

DOI：10.1016/j.msea.2011.10.095

• Light microscopy
• Microstructure
• Chemical composition
• Hardness measurement
• Titanium alloys
• Additive layer manufacturing

Additive layer manufacturing offers a potential for time and cost savings, especially for aerospace components made from costly titanium alloys. In this paper, the morphology, microstructure, chemical composition, and hardness of additive manufactured Ti-6Al-4V blocks are investigated and discussed. Blocks (7 beads wide, 7 layers high) were deposited using Ti-6Al-4V wire and a Nd:YAG laser. Two different sets of parameters are used and three different post heat treatment conditions (as-built, 600 degrees C/4 h, 1200 degrees C/2 h) are investigated. The experiments reveal elementary properties of additive manufactured Ti-6Al-4V material in correlation to process parameters and heat treatments, which are discussed comprehensively.

• 出版日期2012-1-15