Effect of in situ TiC Particulate on the Microstructure of Spray Deposited Al-20Si-5Fe Alloy
-
摘要: 利用熔鑄-原位反應噴射沉積成形技術制備了TiC顆粒增強A1-20Si-SFe復合材料.分析了內生TiC顆粒對噴射沉積Al-20Si-5Fe合金微觀組織的影響.結果表明:噴射沉積A1-20SI-5Fe合金微觀組織中常出現脆性、針狀的A1-SI-Fe三元金屬間化合物相.在A1-20Si-5Fe合金中內生一定量的TiC顆粒,有助于減小粗晶Si顆粒的尺寸、消除針狀的A1-Si——Fe三元金屬間化合物相.
-
關鍵詞:
- 原位反應 /
- TiC顆粒 /
- 噴射成形 /
- 過共晶Al-Si合金 /
- 微觀組織
Abstract: A TiC/A1-20Si-5Fe composite is fabricated by melt in situ reaction spray forming and effect of in situ TiC particulate on the microstructure of spray-deposited Al-20Si-5Fe alloy is studied. Both theoretical and experimental results have shown that some Al-Si-Fe intermetallic phases with needle-like structure exist in the spray-deposited Al-20Si-5Fe alloy, which is harmful to the tensile properties of the composites. The needlelike intermetallic phases can be entirely absent in the final product after 5%Tic (mass fraction) particulates are in situ formed in spray-deposited Al-20Si-5Fe alloy.-
Key words:
- insitur eaction /
- Tic particulate /
- spray forming /
- hypereutectic Al-Si alloy /
- microstructure
-
點擊查看大圖
計量
- 文章訪問數: 166
- HTML全文瀏覽量: 24
- PDF下載量: 7
- 被引次數: 0
下載: