JPS6469942A - System for diagnosing life in stress corrosion cracking of metallic material - Google Patents

System for diagnosing life in stress corrosion cracking of metallic material

Info

Publication number
JPS6469942A
JPS6469942A JP22637287A JP22637287A JPS6469942A JP S6469942 A JPS6469942 A JP S6469942A JP 22637287 A JP22637287 A JP 22637287A JP 22637287 A JP22637287 A JP 22637287A JP S6469942 A JPS6469942 A JP S6469942A
Authority
JP
Japan
Prior art keywords
corrosion
scc
test
life
actual
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP22637287A
Other languages
Japanese (ja)
Inventor
Eiji Kikuchi
Noriyuki Onaka
Katsumi Mabuchi
Takuya Takahashi
Masanori Sakai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP22637287A priority Critical patent/JPS6469942A/en
Publication of JPS6469942A publication Critical patent/JPS6469942A/en
Pending legal-status Critical Current

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  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

PURPOSE:To make it possible to evaluate the occurring life in SCC and toler ance in an actual corrosion environment without a makeshift test in an accelera tion environment, by obtaining the amount of electric charge for the active dissolution of a new surface at a constant potential and localization coefficient of corrosion. CONSTITUTION:A corrosion model, which can explain with unity an SCC mechanism, is contrived. The occurring life of the SCC can be evaluated by measuring the basic parameters of the corrosion model. Namely, the SCC characteristics can be evaluated by obtaining the amount of electric charge with respect to the active dissolution of a new surface and the localization coefficient of corrosion. Assumption that the result of an acceleration test is equal to the result of the test of an actual machine is not required. The SCC life of a metallic materials can be obtained by an experiment-room test, for which an actual corrosion environment is implemented, and by the test of the actual machine. The system is suitably used as the SSC-life diagnostic method of the metallic material without any trouble.
JP22637287A 1987-09-11 1987-09-11 System for diagnosing life in stress corrosion cracking of metallic material Pending JPS6469942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22637287A JPS6469942A (en) 1987-09-11 1987-09-11 System for diagnosing life in stress corrosion cracking of metallic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22637287A JPS6469942A (en) 1987-09-11 1987-09-11 System for diagnosing life in stress corrosion cracking of metallic material

Publications (1)

Publication Number Publication Date
JPS6469942A true JPS6469942A (en) 1989-03-15

Family

ID=16844100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22637287A Pending JPS6469942A (en) 1987-09-11 1987-09-11 System for diagnosing life in stress corrosion cracking of metallic material

Country Status (1)

Country Link
JP (1) JPS6469942A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0612039A2 (en) * 1993-02-15 1994-08-24 Babcock-Hitachi Kabushiki Kaisha Maintenance systems for degradation of plant component parts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0612039A2 (en) * 1993-02-15 1994-08-24 Babcock-Hitachi Kabushiki Kaisha Maintenance systems for degradation of plant component parts
EP0612039A3 (en) * 1993-02-15 1995-09-13 Babcock Hitachi Kk Maintenance systems for degradation of plant component parts.

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