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failure analysis of martensitic stainless steel bridge

(PDF) Failure Analysis of Crane Wire Rope Azmi Rahmat

The wire, for rope, is made from several materials such as steel, iron, and/or stainless steel. High carbon steel is the most widely used material, available in a variety of grades, each of which has the properties related to the basic curve for steel wire rope. Common defects of the wire rope are corrosion, excessive heat or chemical damage.

05096 FAILURE OF A 15 PERCENT CHROMIUM MARTENSITIC

05096 FAILURE OF A 15 PERCENT CHROMIUM MARTENSITIC STAINLESS STEEL PRODUCTION TUBING COUPLING - Results of a Failure Analysis and a Laboratory Study Available for download Product Number:51300-05096-SG 4.5 REACTOR MATERIALS 4.5.1 Control Rod Drive System The hold-down spring is made from martensitic stainless steel, AISI Type 403 Modified (Code Case N-4-11) Heat Treated. This martensitic stainless steel is delivered in the quenched and tempered condition. The material is tempered at a minimum of 1125 F° as required by ASME Code Case N-4-11.

Corrosion Failures:Theory, Case Studies, and Solutions

Provides corrosion basics in a lucid manner to students and working professionals and over 80 corrosion-failure analysis case studies Correlates Failure Analysis with Corrosion Science Exclusively provides corrosion-related failure analysis case histories in one place in a convenient format One-stop shop for both science and real time occurrence of the phenomenon of corrosion Full coverage of Failure Investigation of Condensate Pump Shaft SpringerLinkThe shaft was fabricated from martensitic stainless steel. A detailed study was carried out to determine the root cause of the shaft failures. Visual examination, macroanalysis, chemical analysis, microstructural characterization, and fractography examinations were also carried out to ascertain the probable cause of shaft failure.

Failure analysis of a Pelton turbine manufactured in soft

Jan 01, 2011 · In this paper, the failure of a large Pelton turbine (sketched in Fig. 1), immediately after receiving a quenching and tempering heat treatment, is analysed.The external diameter of the wheel (including the disc and the blades) is approximately 1400 mm whereas the total weight is about 5200 kg.The turbine was manufactured in ASTM CA-6NM soft martensitic cast stainless steel (G-X4 Cr Failure analysis of a welded impeller in coke oven gas A study has been performed to determine the reason for the failure of a group of duplex stainless steel valves after 15 years in service. Chemical analysis did not agree with the required quality.

Failure analysis of impeller made of FV520B martensitic

The impeller made of FV520B martensitic precipitated hardening stainless steel, fractured after service for 4 months in moist H2S condition. Efforts were made to analyze the failure impeller in Failure of a Martensitic Stainless Steel Ball Valve Initial examination of the valves showed that failure occurred in a weld at the ball/stem junction end of austenitic stainless steel sleeves that had been welded to the valve stem at both ends. Metallographic examination showed that a crack had been introduced into the weld by improper weld heat treatment.

Failures of high strength stainless steel bridge roller

Jul 01, 2017 · Although previous investigations of the stainless steel bearings have not been able to clearly identify the cause(s) of the failures occurred, it is found that the failures primarily occurred due to initiation of cracks through stress corrosion cracking followed by fatigue crack growth requiring a certain stress range and a sufficiently large number of cycles until final failure ensued through sudden and Heat Treating of Precipitation-Hardenable Stainless Steels The article describes the mechanical properties, solution treatment, and aging treatment for many martensitic PH alloys, including:Alloy 17-4 PH, Alloy 13-8 Mo, Alloy 15-5 PH, Custom 450, and Custom 455; as well as semiaustenitic PH stainless steels such as Alloy 17-7 PH, Alloy PH 15-7 Mo, AM-350, Pyromet 350, AM-355, and Pyromet 355

Influence of CO on the corrosion behaviour of 13Cr

sites. To get to know the corrosion behaviour samples of the heat treated steel AISI 4140, 42CrMo4, used for casing, and the martensitic stainless injection-pipe steel AISI 420, X46Cr13 were kept at T=60°C and p=1-60 bar for 700 h-8000 h in a CO2-saturated synthetic aquifer environment similar to the geological CCS-site at Ketzin, Germany. METALLURGICAL FAILURE ANALYSIS OF STEAM TURBINE martensitic stainless steel such as AISI 403 which can be susceptible to corrosion in a chloride environment. Chlorides such as NaCl can lead to pitting and SCC of steam turbine blades. Sodium Sulfite (Na 2SO 3) is used as an oxygen scavenger but has the potential to decompose into hydrogen sulfide. Hydrogen sulfide is a corrosive compound that can

Metallographic preparation of stainless steel Application

Feb 11, 2020 · of stainless steel Thorough diamond polishing and final addition, metallography is used in failure analysis investigating corrosion/oxida-tion mechanisms. Martensitic stainless steels are heat treatable alloys with medium carbon content, 12-18% chromium and 2-4% nickel. Numerical and Experimental Analysis of Damage Evolution Garion, C., Skocze, B. and Sgobba, S. [2006] Constitutive modelling and identification of parameters of the plastic strain-induced martensitic transformation in 316L stainless steel at cryogenic temperatures, International Journal of Plasticity 22(7), 12341264.

Popular Metals Standards - ASTM International

G146-01(2018):Standard Practice for Evaluation of Disbonding of Bimetallic Stainless Alloy/Steel Plate for Use in High-Pressure, High-Temperature Refinery Hydrogen Service. G161-00(2018):Standard Guide for Corrosion-Related Failure Analysis. G187-18:Standard Test Method for Measurement of Soil Resistivity Using the Two-Electrode Soil Box Method Proposed Theory for the Hydrogen Embrittlement Resistance Jun 11, 2013 · Custom 455 is a double vacuum-melted, martensitic precipitation age-hardening stainless steel, which is reported to be susceptible to hydrogen embrittlement. This paper proposes a plausible rationale for the resistance to hydrogen embrittlement of this type of stainless steel.

REVIEW OF THE WEAR AND GALLING CHARACTERISTICS

2 Introduction For the vast majority of stainless steel applications throughout industry, such as tanks, vessels, piping, structural components, utensils, and general Role of tungsten, niobium, and vanadium on corrosion May 15, 2018 · B. and A. P., Investigation of turbine blade failure in a thermal power plant, Case Studies in Engineering Failure Analysis, The effect of tempering temperature on the microstructure and electrochemical properties of a 13 wt.% Cr-type martensitic stainless steel, Electrochimica Acta,

Welding of Ferritic / Martensitic Stainless Steels - TWI

Stainless steels are 'stainless' i.e. are corrosion resistant, due to the presence of chromium in amounts greater than 12%, where it forms a passive film on the surface of the steel. Note that these stainless steels are not the 'stainless steels' that generally first spring to mind; the 18% Cr/8% Ni austenitic stainless steels of the Type 304 or Type 316 grades; but two separate groups of What is the Difference Between Carbon Steel and Stainless Carbon steel tends to have under 10.5% chromium content, but steel must be at least 10.5% chromium to be considered stainless. These differences give each type of steel its respective properties. Stainless Steel. Stainless steel refers to a type of steel which is defined by the addition of chromium, and some other alloying elements such as nickel.

Failure analysis of martensitic stainless steel bridge

Paper Cis aimed at finding the likely failure mechanism of a bridge roller bearing made of high strength martensitic stainless steel. Spectroscopy and finite element stress analysis of the roller indicated that an initial radial surface crack, found at an end face of the roller and close to the contact region, was induced by stress corrosion cracking (SCC).

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