EROSION RESISTANCE OF 18-PERCENT CR CAST STAINLESS-STEEL IN SEA-WATER

被引：0

作者：

ONO, S ^{[1
]}

SAITO, M ^{[1
]}

MATSUO, S ^{[1
]}

机构：

[1] MITSUBISHI HEAVY IND CO LTD, NAGASAKI RES & DEV CTR, NAGASAKI, JAPAN

来源：

JOURNAL OF THE JAPAN INSTITUTE OF METALS | 1993年 / 57卷 / 03期

关键词：

18-PERCENT CHROMIUM CAST STAINLESS STEEL; MARINE PROPELLER; EROSION RESISTANCE; CAVITATION EROSION; HARDNESS; PITTING POTENTIAL; STRESS INDUCED MARTENSITE; NICKEL ALUMINUM BRONZE;

D O I：

10.2320/jinstmet1952.57.3_307

中图分类号：

学科分类号：

摘要：

Recently, a new high strengh 18%Cr cast stainless steel (C less-than-or-equal-to 0.04%, Cr:16 approximately 18%, Ni:5 approximately 7%, Mo:1%) has been put into practical use for marine propellers. The erosion resistance of this steel was compared with that of other cast stainless steels such as martensitic cast stainless steel and nickel aluminum bronze. The results are summarized as follows: (1) Pitting potential of the steel, which consists of martensitic, austenitic and ferritic phases, is 0.27 approximately 0.33 V(vs Ag/AgCl/KCl) in sea water. This result shows the corrosion resistance of the steel is better than that of SUS304 and martensitic cast stainless steels. (2) The hardness of the steel was lower than that of martensitic cast stainless steel. The erosion resistance of the steel was, however, higher than that of other cast stainless steels. This was due to hardening of the surface of the erosion test specimen caused by the stress induced martensitic transformation of the residual austenitic phase. (3) The erosion resistance of the steel was about two times higher than that of nickel aluminum bronze.

引用

页码：307 / 311

页数：5