Influence of microstructure and composition on mechanical properties of some AISI 300 series weld metals

Smith, J. J.; Farrar, R. A.

doi:10.1179/095066093790150910

Cited by 14 publications

(17 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A possible mechanism for the precipitation of M 23 C 6 has been detailed by Smith and Farrar. [13] Preferential nucleation takes place at the austenite-ferrite boundaries due to the concentration of chromium in delta ferrite and carbon in austenite. Diffusion of the elements to the M 23 C 6 is enhanced as the interface acts as a solute sink.…”

Section: B Precipitationmentioning

confidence: 99%

“…However, the microstructure of the weld is not uniform and mixed ferrite structures have been reported. [5] The microstructures present in the weld metal have been shown to influence the mechanical properties of the weld metal, and this has been reported extensively by Smith and Farrar [13] and by Folkhard, [14] among many others. The present work has been carried out to investigate in detail two of the problem areas reported [6] as producing unsatisfactory welds: anomalies in weld metal hardness and ferrite numbers within dissimilar welds of 316LN plate and mild steel plate.…”

Section: Introductionmentioning

confidence: 97%

“…The criteria for this categorization have been endorsed by Smith and Farrar. [13] With an increase in the ferrite number from zero, the structures have been classed as cellular, which is almost totally austenitic, skeletal ferrite, lathy ferrite, and Widmanstätten ferrite. A further increase in the ferrite number would start to produce microstructures that are more typical of those found in duplex stainless steel weld metal.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A study of the structure of dissimilar submerged arc welds

McPherson¹,

Baker

Millar

1998

Metall Mater Trans A

View full text Add to dashboard Cite

Butt welds have been produced using the submerged arc welding (SAW) process to join a carbon steel plate of normal shipbuilding grade to an austenitic stainless steel 316LN plate. Variables used in this work were the position of the consumable wire in the weld preparation and the ferrite number of the consumable wire. Abnormally high hardnesses were measured in some regions of the welds. These were related to the central position of the consumable wire in the weld preparation. Undesirably low ferrite numbers were related to the ferrite number of the consumable wire and also to the central position of the consumable wire in the weld preparation. The position of the consumable wire in the weld preparation controlled the relative dilution from the parent plates, and when the dilution from the 316LN steel was increased by off-setting the wire to that side of the weld preparation, the high hardness regions were no longer found. Similar optical microstructures were found to have significantly different hardnesses, which were related to the dilution effects, which were also related to the wire position within the weld preparation. Martensite was observed by transmission electron microscopy (TEM) in some of the regions of high hardness, and in other areas, the presence of extensive precipitation of M 23 C 6 was seen. The presence of M 23 C 6 was due to the effects of high heat input or reheating of areas by subsequent passes. The determination of the ferrite number in dissimilar welds was problematic. Feritscope determinations appeared to be influenced by magnetic effects from adjacent areas of the carbon steel. Image analysis was found to be less reliable than the Feritscope for the determination of the ferrite numbers in dissimilar welds.

show abstract

Section: B Precipitationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A study of the structure of dissimilar submerged arc welds

McPherson¹,

Baker

Millar

1998

Metall Mater Trans A

View full text Add to dashboard Cite

show abstract

“…Aynı cins veya farklı cins paslanmaz çeliklerin kaynaklı birleştirmelerinde kullanılacak elektrot seçiminde ve oluşabilecek yapı tahmini için Schaeffer, De Long ve WRC diyagramlarından sıklıkla yararlanılmaktadır [20,21].…”

Section: Introductionunclassified

Aisi 316l-Aisi 2205 Farkli Paslanmaz Çeli̇k Çi̇fti̇ni̇n Kaynak Kabi̇li̇yeti̇

Emre¹,

Kaçar²,

Bülbül³

et al. 2017

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

View full text Add to dashboard Cite

ÖZBu çalışmada endüstride gıda, eczacılık, kimya, petrokimya ve gemicilik alanlarında sıklıkla kullanılan östenitik ile dubleks paslanmaz çelik çiftinin birleştirilmesinde kaynak yönteminin ve ilave metal seçiminin birleştirme mekanik özelliklerine ve mikro-yapısına etkisi incelenmiştir. Bu amaçla AISI 316L östenitik ve AISI 2205 dubleks paslanmaz çelik çifti gaz metal ark kaynak yöntemi (GMAK) kullanılarak TETRA V 316L-G ve TETRA S 22 9 3L-G flaks özlü tel ile "V" kaynak ağzı açılarak birleştirilmiştir. Aynı malzeme çifti elektrik ark kaynak yöntemi kullanılarak (EAK) E308L-16 ve E2209-17 elektrot ile de uygun standartlarda birleştirilmiştir. Kaynak işlemi sonrası numunelere çekme testi uygulanmış ve test sonrası kırılma yüzeyleri incelenmiştir. Birleştirme mikro-yapıları incelenerek, mikro-sertlik ve ITAB genişlikleri ölçülmüştür. Kaynak yöntemi ve ilave metal türüne göre elde edilen sonuçlar karşılaştırılmıştır.Anahtar Kelimeler: AISI 316L-AISI 2209 paslanmaz çelik, gaz metal ark kaynağı, elektrik ark kaynağı, mekanik özellikler, mikro-yapı WELDABILITY OF DISSIMILAR AISI 316L-AISI 2205 STAINLESS STEEL COUPLE ABSTRACTIn this study, the effect of welding consumable and welding method on the mechanical properties and microstructure of weldment was investigated for joining austenitic and duplex stainless steel couple, which were used in food, pharmacy, chemistry, petro chemistry and shipping industry. According to standard, V shape welding groove was prepared for AISI 316L-AISI 2205 stainless steel couple that was welded in butt position by using gas metal arc welding (GMAW) with using TETRA V 316L-G and TETRA S 22 9 3L-G type welding wire and electric arc welding (EAW) with using E308L-16 and E2209-17 type electrodes. The mechanical properties of the weldment were determined by tensile test and fracture surface of the test samples were evaluated. In addition, hardness and HAZ width measurements and microstructure evaluation was carried out on the cross section of weldment. Results were compared according to the differences of welding method and welding consumable.

show abstract

“…The presence of rphase not only results in harmful influence on the mechanical properties of the material , but also reduces its corrosion resistance by removing chromium and molybdenum from the austenitic matrix [1][2][3][4][5]. It is well known that morphology, size and distribution of precipitates give rise to different effects on the mechanical behaviour of austenitic stainless steels [6,7]. So it is necessary to understand the metallurgical process taking place in the material under elevated temperature for better safety and economy.…”

Section: Introductionmentioning

confidence: 99%