G040061 Carbon添加によるAZ91D射出成形品の強度特性([G04006]機械材料・材料加工部門一般セッション(6))

概要

論文の詳細を見る
The influence of the injection parameters and Carbon addition on the mechanical property of magnesium alloy products made by injection molding method was investigated. Test pieces were cut out from the plain plate made of AZ91D or AZ91D+Carbon Mg alloy, which was molded in a metal die by using a Thixomolding machine. The test piece, whose thickness was 2.5 mm were examined. The mold and barrel temperature was kept to 483 and 893 K, respective. The gate velocity was varied between 11.6 m/s and 37.7 m/s. The test piece was mechanically characterized under tensile and bending load. The result of tensile test showed that the tensile strength was increased not only with increase of increase of gate velocity, but also with increase of Carbon content. The bending strength of AZ91D was also increased with increase of the gate velocity, however it decreased considerably at the low gate velocity condition when Carbon was not added. On the other hand, the bending strength of AZ91D+Carbon was almost constant when the gate velocity was changed. The bending strength of AZ91D+Carbon was increased when Carbon was added with 0.1 mass % of concentration. However, the excessive amount Carbon (over 0.1 mass%) was not effective to improve the bending strength. These results suggested that the addition of Carbon with appropriate content was effective to improve tensile and bending properties of AZ91D.
一般社団法人日本機械学会の論文
2011-09-11