Influence of Weld Heat Input on the Fracture and Metallurgy of HSLA-65
Influence of Weld Heat Input on the Fracture and Metallurgy of HSLA-65
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DOI：
10.1179/cmq.2009.48.3.311
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发表时间：
2009-09
影响因子：
0.9
通讯作者：
C. Bayley;A. Mantei
中科院分区：
文献类型：
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作者：
C. Bayley;A. Mantei
HSLA-65钢是一种优良的舰艇用钢。其低碳当量和强度重量比使其成为未来加拿大海军平台的理想候选者。在本研究中，采用两种不同的热输入，采用焊剂芯弧焊工艺制造焊缝。对于高热输入的焊缝，韧脆转变温度高于最低使用温度，而对于低热输入的焊缝，韧脆转变温度仍远低于使用温度。研究了转变温度发生这种显著变化的原因，揭示了夏比缺口的采样位置是一个重要因素，以及潜在的转变产物。
Abstract HSLA-65 steel is regarded as an excellent naval ship steel. Its low carbon equivalent and strength-to-weight ratio make it an ideal candidate for future Canadian naval platforms. In this study, welds were fabricated using the flux core arc welding process using two different heat inputs. For the high heat input welds, the ductile-to-brittle transition temperature shifts above the minimum service temperature, while the ductile-to-brittle transition temperature for the low heat input case remains well below the service temperature. The reason for this significant shift in the transition temperature is examined, revealing that the sampling location of the Charpy notch is a significant factor, along with the underlying transformation product.