根据母材临界点蚀温度(CPT)的试验结果, 利用小试样的腐蚀实验方法研究了奥氏体-铁素体双相不锈钢焊接接头的耐点蚀性能. 结果表明, 手工电弧焊工艺过程对双相不锈钢材料的耐点蚀性能具有显著的影响, 点蚀优先发生在焊缝金属或焊接热影响区中. 双相不锈钢材料的耐点蚀性能与材料本身奥氏体和铁素体相比例有关. 腐蚀试样的表面状态(粗糙程度)对母材金属的耐点蚀性能有明显的影响. 表面越粗糙, 耐点蚀性能越差, 临界点蚀温度越低.
参考文献
[1] | Nelson D E;Baeslack W A III;Lippold J C .An investigation of weld hot cracking in duplex stainless steels[J].Welding Journal,1987,66(08):241-250. |
[2] | Matsuda F;Nakagawa H;KATO I .Solidification crack susceptibility in weld metal of duplex stainless steels[J].Welding Research Abroad,1987,33(6-7):17-30. |
[3] | Baeslack W A;Lippold J C .Phase transformation behavior in duplex stainless steel weldments[J].Metal Construction,1988,20(01):26R-30R. |
[4] | Tamaki K;Yasuda K;Kimura M et al.Optimizing welding condition for excellent corrosion resistance in duplex stainless steel linepipe[J].Welding Research Abroad,1989,35(05):2-8. |
[5] | Shinozaki K;Ke L;North T H .Hydrogen cracking in duplex stainless steel weld metal[J].Welding Journal,1992,71(11):387-396. |
[6] | Karlsson L;Ryen L;Pak S .Precipitation of intermetallic phases in 22%Cr duplex stainless weld metals[J].Welding Journal,1995,74(01):28-40. |
[7] | T. G. GOOCH .Corrosion Behavior of Welded Stainless Steel[J].Welding Journal,1996(5):135s-154s. |
[8] | Damian KI .Welding stainless steel[J].Current Advances in Materials and Processes,1999,155:41-44. |
[9] | E. J. BARNHOUSE;J. C. LIPPOLD .Microstructure/Property Relationships in Dissimilar Welds between Duplex Stainless Steels and Carbon Steels[J].Welding Journal,1998(12):477s-487s. |
[10] | Li L;Messler R W Jr .The effects of phosphorous and sulfur on susceptibility to weld hot cracking in austenitic stainless steels[J].Welding Journal,1999,78(12):387-396. |
[11] | Nelson T W;Lippold J C;Mills M J .Nature and evaluation of the fusion boundary in ferritic-austenitic dissimilar weld metals,Part Ⅰ-nucleation and growth[J].Welding Journal,1999,78(10):329-337. |
[12] | 梁成浩.金属腐蚀学导论[M].北京:机械工业出版社,1999:81-87. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%