Hot cracking of welds on heat treatable aluminium alloys

C. M. Cheng, C. P. Chou*, I. K. Lee, H. Y. Lin

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

21 引文 斯高帕斯(Scopus)

摘要

The Spot Varestraint test was used to evaluate the hot cracking susceptibility of several aluminium alloys namely 6061-T6, 6061-T6 (H), 7075-T6, 7075-T6 (H). The effects of augment strain, the number of thermal cycles and cold working (rolling) on the cracking susceptibility were investigated, and the total crack length was used to evaluate the hot cracking susceptibility. The results indicate that the number of thermal cycles is irrelevant to the hot cracking susceptibility in the weld fusion zone, but does affect this susceptibility in the heat affected zone (HAZ). More thermal cycles correspond to larger hot cracks in the HAZ, especially in the weld metal HAZ. The hot cracking susceptibility of materials increased with augment strain in both the fusion zone and the HAZ. Cold working of the materials can reduce their hot cracking susceptibility. The hot cracking susceptibility of 7075-T6 aluminium alloys is higher than that of 6061-T6. There was significant Cu segregation in the HAZ of 7075-T6 aluminium alloy, resulting in a higher susceptibility to hot cracking in this zone.

原文英語
頁(從 - 到)344-352
頁數9
期刊Science and Technology of Welding and Joining
10
發行號3
DOIs
出版狀態已發佈 - 2005 6月
對外發佈

ASJC Scopus subject areas

  • 材料科學(全部)
  • 凝聚態物理學

指紋

深入研究「Hot cracking of welds on heat treatable aluminium alloys」主題。共同形成了獨特的指紋。

引用此