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通过宏观检验、力学性能测试、金相组织及断口分析,本文得出了水冷壁管爆裂的主要原因是短期过热造成的,且过热区的范围较小。
Through macroscopical inspection, mechanical property test, microstructure and fracture analysis, this paper concludes that the main reason of water wall tube burst is caused by short-term overheating, and the area of overheated zone is small.