Vol 10, No 2 (2006) > Articles >

Stress Corrosion Cracking Behavior of Stainless Steel 304 in the Sulfuric Acid Environment Due to Prestrain

Mohammad Badaruddin 1 , Ahmad Suudi 1 , Arinal Hamni 1


  1. Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung, Bandar Lampung 35145, Indonesia



The aim of  research is to investigate the effect of prestrain  on the stress corossion cracking behavior of AISI 304 stainless steel in the sulfuric acid of 10% concentration  under the static cantilever loading according to ASTM E-1681 standart. The specimen of 304 Stainless steel was strain up over the yield strength until reaching the uniform strain of 5% and 10% using servopulser UTM 9506 under the  displacement control of 0,3 mm/sec. The results of test  show that the prestrain of 5%  specimen is faster  failure than both  of  the prestrain of 10% and unprestrain specimen. It was caused by both of the decrease of ductility and  the short   incubation period. The change of deflection could be only recorded under  the loading 20% of yield strength. Intergranular crack was the prestrain of 10% specimen under the static loading of  616 MPa. Whereas,  for the prestrain of 10% specimen transgranular crack  was found under the static loading of 554,4 MPa. The prestrain of 5% specimen was mixed crack  under the static loading of 369.6 MPa. Higher dislocation density on the layer surface due to plastic deformation with increasing the percentage of pre-strain, so more difficult hydrogen diffused into the crack tip. Consequently, The incubation period can be prolonged.

Keywords: stress corrosion cracking, incubation period, prestrain, trans-inter granular cracking
Published at: Vol 10, No 2 (2006) pages: 67-71

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