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首页> 外文期刊>Journal of Iron and Steel Research International >Evaluation of Cracking Resistance of Copper-Bearing Age Hardening Steel Weldment
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Evaluation of Cracking Resistance of Copper-Bearing Age Hardening Steel Weldment

机译：含铜时效硬化钢焊缝的抗裂性评估

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摘要

The weldability of a low-carbon copper-bearing age hardening steel was evaluated using cracking susceptibility calculation, HAZ maximum hardness measurement, and Y-groove cracking evaluation test. The results show that the hardenability characteristics and cold cracking susceptibility of the steel are very low. The results also indicate that a crack-free weldment can be obtained during the welding of this type of steel even at an ambient temperature as low as -5℃ as well as in an absolute humidity lower than 4 000 Pa without any preheat treatment. A slight preheat treatment can prevent the joint from cracking when welding is carried out at lower ambient temperature or higher absolute humidity.
机译：使用开裂敏感性计算，HAZ最大硬度测量和Y槽开裂评估测试，评估了低碳含铜时效硬化钢的焊接性。结果表明，钢的淬透性和冷裂敏感性很低。结果还表明，即使在环境温度低至-5℃以及绝对湿度低于4 000 Pa的情况下，未经任何预处理，在焊接这种类型的钢时也可以获得无裂纹的焊缝。在较低的环境温度或较高的绝对湿度下进行焊接时，略微的预热处理可防止接头破裂。

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