Paper Title:
Stress Corrosion Crack Tests of 16MnR Low Alloy Steel in Anhydrous Ammonia Environment
  Abstract

Anhydrous ammonia is one of the medium where the steel is easy to suffer stress corrosion cracking. Many stress corrosion crack accidents of ammonia storage tanks have been reported all over the world for recent years. 16MnR low alloy steel with good composite mechanical properties is the most common used pressure vessel steel in China, it has better anticorrosion properties than the low alloy high strength steel, especially in anhydrous ammonia environments. Many stress corrosion crack researches have been done for 16MnR steel in wet hydrogen sulfide service for last decades, but less has been done in anhydrous ammonia environments. Stress corrosion tests with eight constant strain pre-cracked specimen were carried out in this work. The pre-cracked specimen were loaded with loading bolts and put into the special ammonia storage tank for tests, they were taken out from the tank periodically to measure crack length. The stress corrosion crack growth rate and the threshold stress intensity factors KISCC of 16MnR steel in anhydrous ammonia environments were measured. Based on test results, the effects of environmental factors and steel strength on stress corrosion cracking of 16MnR steel in anhydrous ammonia service were analyzed. It could be concluded that specimen cracks of the 16MnR steel in anhydrous ammonia environments almost do not grow, threshold stress intensity factors KISCC are higher than 90MPa m .

  Info
Periodical
Key Engineering Materials (Volumes 297-300)
Edited by
Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim
Pages
974-979
DOI
10.4028/www.scientific.net/KEM.297-300.974
Citation
Z. Lu, B. B. Chen, Z. L. Gao, D. M. Fang, "Stress Corrosion Crack Tests of 16MnR Low Alloy Steel in Anhydrous Ammonia Environment ", Key Engineering Materials, Vols. 297-300, pp. 974-979, 2005
Online since
November 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zi Na Zhu, Zhuo Meng, Guang Chao An, Yi Ze Sun
Chapter 2: Material Science and Technology
Abstract:Focusing on the residual amount of liquid ammonia in modified cotton yarn, this paper presents a new method of drying the liquid ammonia by...
1619
Authors: Hui Ping Song, Ying Ying Jiang, Fang Qin Cheng
Chapter 2: Chemical Engineering
Abstract:The ammonia-nitrogen wastewater was purified by using electrodialysis (ED) device in this paper. The NH4Cl solution was used as...
1346
Authors: Mei Yuan Ke
Chapter 4: Steel
Abstract:Effects of Sintering atmosphere and temperature on properties of warm compacted 410L stainless steel powder were studied. Sintered density,...
483
Authors: Miao Wan Li, Yan Zhen Yu, Lei Cheng
Chapter 2: Environmental Materials and Processes
Abstract:Use natural zeolite to prepare spherical composite zeolite filter material. With range analysis, the composite zeolite filter material’s...
522
Authors: Hatem Mustafa
Abstract:Absorption phenomenon of ammonia vapor into ammonia water solution has been investigated experimentally, by allowing superheated ammonia...
167