广东电力
廣東電力
엄동전력
GUANGDONG ELECTRIC POWER
2014年
3期
34-39
,共6页
奥氏体不锈钢%Super304H钢%M23 C6%晶间腐蚀
奧氏體不鏽鋼%Super304H鋼%M23 C6%晶間腐蝕
오씨체불수강%Super304H강%M23 C6%정간부식
Austenitic stainless steel%Super304H steel%M23 C6%intergranular corrosion
首先从成分、结构特点、与贫Cr区的关系，以及界面、合金元素和应力状态对析出的影响等方面阐述了奥氏体不锈钢中 M23 C6的特性；然后以超超临界压力锅炉的过热器管和再热器管常用的奥氏体 Super304H不锈钢为例，结合Super304H不锈钢的成分和特点，提出通过调整晶界工程、优化高温软化工艺、加速 M23 C6形成和增加去敏化工艺等方法来改善 Super304H钢高晶间腐蚀的敏感性；最后指出研究 Super304H 不锈钢去敏化过程的规律是今后的研究方向。
首先從成分、結構特點、與貧Cr區的關繫，以及界麵、閤金元素和應力狀態對析齣的影響等方麵闡述瞭奧氏體不鏽鋼中 M23 C6的特性；然後以超超臨界壓力鍋爐的過熱器管和再熱器管常用的奧氏體 Super304H不鏽鋼為例，結閤Super304H不鏽鋼的成分和特點，提齣通過調整晶界工程、優化高溫軟化工藝、加速 M23 C6形成和增加去敏化工藝等方法來改善 Super304H鋼高晶間腐蝕的敏感性；最後指齣研究 Super304H 不鏽鋼去敏化過程的規律是今後的研究方嚮。
수선종성분、결구특점、여빈Cr구적관계，이급계면、합금원소화응력상태대석출적영향등방면천술료오씨체불수강중 M23 C6적특성；연후이초초림계압력과로적과열기관화재열기관상용적오씨체 Super304H불수강위례，결합Super304H불수강적성분화특점，제출통과조정정계공정、우화고온연화공예、가속 M23 C6형성화증가거민화공예등방법래개선 Super304H강고정간부식적민감성；최후지출연구 Super304H 불수강거민화과정적규률시금후적연구방향。
This paper firstly states characteristics of M23 C6 in Austenitic stainless steel in aspects of ingredients,structural features,relationship between Cr-depleted zone and impacts of interface,alloying elements and stress states on precipitati-on.Taking superheater pipe of the supercritical pressure boiler and Austenitic Super403H stainless steel often used for rehea-ter pipe as examples and combining ingredients and characteristics of Super304 H stainless steel,it proposes to improve sensi-tivity of intergranular corrosion of Super304H by means of adjusting grain boundary engineering,optimizing high tempera-ture softening technics,speeding up formation of M23 C6 and increasing sensitizing technics.At last,it points out that stud-ying on laws of sensitizing process of Super304H stainless steel is a future research direction .
