EFFECT OF GAMMA-PHASE ON CORROSIVE WEAR OF DUPLEX STAINLESS-STEEL IN SULFURIC-ACID-SOLUTION

被引:10
作者
LU, XC [1 ]
LI, SZ [1 ]
JIANG, XX [1 ]
ZHANG, TC [1 ]
机构
[1] ACAD SINICA,INST MET RES,SHENYANG 110015,PEOPLES R CHINA
关键词
CATHODIC PROTECTION; CORROSIVE WEAR; DUPLEX STAINLESS STEEL; SOLUTION HEAT TREATMENT; SULFURIC ACID;
D O I
10.5006/1.3293612
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A modified pin-on-ring device was used to study corrosive wear of a duplex stainless steel (DSS) containing ferrite (alpha) and austenite (gamma) phases in 1 mol/L sulfuric acid (H2SO4) at room temperature. Different percentages of gamma phase in the matrix (gamma(p)) were obtained by annealing at different solution temperatures. The corrosive wear resistance of the DSS containing small amounts of gamma phase was shown to be greater than that of DSS containing large amounts of gamma phase under low loads (< 22 N), but the opposite was true under high loads (> 22 N). The same relationships between corrosive wear rate and load were found under cathodic protection at -600 mV(SCE). The morphologies of wear tracks and debris were observed by scanning electron microscopy (SEM). The influence of the amount of gamma phase in the matrix on hardness, corrosion, and corrosive wear resistance was evaluated.
引用
收藏
页码:456 / 462
页数:7
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