Zobrazeno 1 - 10
of 46
pro vyhledávání: '"D. G. Chakrapani"'
Autor:
D. G. Chakrapani
A desuperheater diffuser nozzle in the steam supply line failed within nine months of service in an 8.25 MN/sq m (1200 psig) steam line. The nozzle was an austenitic stainless steel casting in conformance to material. The nozzle had numerous cracks o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7989751d90e649e7a41e1116734a1f6
https://doi.org/10.31399/asm.fach.power.c9001566
https://doi.org/10.31399/asm.fach.power.c9001566
Autor:
D. G. Chakrapani
Publikováno v:
ASM Failure Analysis Case Histories: Pulp and Paper Processing Equipment
An Inconel-clad SA-212 Grade B carbon steel inlet cone with an anticipated 25-year service life failed in a localized area after only seven years of service. The failure was caused by an erosion/corrosion leak at the midsection. Erosion/corrosion was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c67277eb2be205bfcc1ebad0e2f67f7
https://doi.org/10.31399/asm.fach.pulp.c9001563
https://doi.org/10.31399/asm.fach.pulp.c9001563
Autor:
D. G. Chakrapani
Publikováno v:
ASM Failure Analysis Case Histories: Pulp and Paper Processing Equipment
A stainless steel pipe transferring hot white liquor solution of sodium hydroxide and sodium sulfite, developed leaks adjacent to the welds within four years of service. The stainless steel pipe was AISI type 304 and welded with E308 weld electrodes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59e0f620f289575888d4b05586d49618
https://doi.org/10.31399/asm.fach.pulp.c9001565
https://doi.org/10.31399/asm.fach.pulp.c9001565
Autor:
D. G. Chakrapani
Publikováno v:
ASM Failure Analysis Case Histories: Pulp and Paper Processing Equipment
The Pandia digester is a long cylindrical vessel which uses alkaline sulfite liquor to cook sawdust for pulping. The inlet cone was fabricated from AISI 304L stainless steel with E308 welds. Typical liquor concentration was approximately 80% NaOH, 20
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fddc03566fbe52cc75f1f6c877b3059
https://doi.org/10.31399/asm.fach.pulp.c9001562
https://doi.org/10.31399/asm.fach.pulp.c9001562
Autor:
D. G. Chakrapani
Publikováno v:
ASM Failure Analysis Case Histories: Pulp and Paper Processing Equipment
Two suction rolls at the first press section of a 25 ft. wide paper machine developed cracks within two years of service. The rolls were austenitic stainless steel castings made of ASTM A 351 Grade CF8M alloy containing molybdenum. The rolls were exp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a5baf0674e9d480f9ce273a1a540204
https://doi.org/10.31399/asm.fach.pulp.c9001568
https://doi.org/10.31399/asm.fach.pulp.c9001568
Autor:
D. G. Chakrapani
A falling film black liquor evaporator consisted of flat twin plate heat exchangers and was used to increase black liquor solids content prior to its burning in the recovery boiler. Several plate heat exchangers were fabricated of AISI type 316L stai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79c3e738fb5d1221dfad5c9281b4f86c
https://doi.org/10.31399/asm.fach.pulp.c9001567
https://doi.org/10.31399/asm.fach.pulp.c9001567
Autor:
D. G. Chakrapani
An 8 in. diam stainless steel black liquor feed pipe to a carbon steel digester had failed within one year of service. The material was type 316 molybdenum-containing austenitic stainless steel. The service environment was alkaline black liquor at 17
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::587d4fc8e5a2e0ff059cbde47c301360
https://doi.org/10.31399/asm.fach.pulp.c9001564
https://doi.org/10.31399/asm.fach.pulp.c9001564
Publikováno v:
Metallurgical Transactions A. 10:935-941
A study has been made of the HE and SCC of a type 304 and a type 310 austenitic stainless steel, and the results correlated with the presence or absence of α′ martensite, determined by means of a ferrite detector. Hydrogen induced slow crack growt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de3e24c4085883e646c11cbc8be481c2
https://doi.org/10.1007/bf02658313
https://doi.org/10.1007/bf02658313
Autor:
E. N. Pugh, D. G. Chakrapani
Publikováno v:
CORROSION. 31:247-252
A fractographic study has been carried out on transgranular stress-corrosion cracks produced in both tensile and bend specimens of a Mg-7.5 Al alloy tested in an aqueous NaCl-K2CrO4 solution. It is concluded that the complex fractography reported in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da3ffefcf0f723e04067e22e60e4ff20
https://doi.org/10.5006/0010-9312-31.7.247
https://doi.org/10.5006/0010-9312-31.7.247
Autor:
D. G. Chakrapani, E. N. Pugh
Publikováno v:
Metallurgical Transactions A. 7:173-178
Experiments are described which demonstrate that a Mg-7.5 wt pct Al alloy is embrittled by both cathodically-generated and gaseous hydrogen. Immersion of unstressed specimens in an aqueous NaCl-K2CrO4 solution is shown to lead to absorption of hydrog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdfd4548fc78204f90fc562537772516
https://doi.org/10.1007/bf02644454
https://doi.org/10.1007/bf02644454