Comparative Hot Cracking Evaluation Of Welded Joints Of Alloy 690 Using Filler Metals InconelSr 52 And 52 Mss

2011 ◽  
Vol 55 (9-10) ◽  
pp. 28-35 ◽  
Author(s):  
Konstantin Yushchenko ◽  
Viktor Savchenko ◽  
Nikolay Chervyakov ◽  
Anna Zvyagintseva ◽  
Evelyne Guyot
Keyword(s):  
Welded Joints ◽  
Hot Cracking ◽  
Alloy 690 ◽  
Filler Metals

Microstructural study in AA7075 alloys welded with different filler metals

MRS Advances ◽  
2019 ◽  
Vol 4 (55-56) ◽  
pp. 3017-3029
Author(s):  
Juan Manuel Salgado L. ◽  
Abraham Silva Hernandez ◽  
Francisco Ignacio López Monroy ◽  
José Luis Ojeda Elizarráras ◽  
Jesús Mauricio Tello Rico
Keyword(s):  
Welded Joints ◽  
Vickers Microhardness ◽  
Microstructural Analysis ◽  
Hot Cracking ◽  
Inert Gas ◽  
Tungsten Inert Gas Welding ◽  
Microstructural Study ◽  
Final Microstructure ◽  
Aa 7075 ◽  
Filler Metals

ABSTRACTEven though AA 7075 is an aluminum alloy with high mechanical properties, it is not often applied in manufacturing. This is so, because it is considered as very difficult to produce defect free welded joints. This is so, because this alloy has a tendency to hot cracking. The metallurgical problems that appear during welding of AA 7075 have not been fully solved but they have been reduced by applying alloys such as: 4043 and 5356 as filler metals. However, in literature there is little information about the metallurgical effects of these types of filler metals applied in arc welded joints of AA7075. This is especially true for Tungsten Inert gas welding. Therefore, this work is focused in comparing the microstructure and Vickers microhardness in weldments of AA 7075 with ER4043, ER5356 and AA7075 as filler metals. Besides, a set of welded joints with the three different filler metals were quenched after welding in order to modify the final microstructure. The results were evaluated by microstructural analysis focused on the Heat Affected Zone and Vickers microhardness and they were compared among them.

scholarly journals Structure and Properties of Welded Joints of 7CrMoVTiB10-10 (T24) Steel

2018 ◽  
Vol 18 (1) ◽  
pp. 37-47 ◽  
Author(s):  
K. Pańcikiewicz
Keyword(s):  
Welded Joints ◽  
Filler Metal ◽  
Coefficient Of Thermal Expansion ◽  
Rupture Strength ◽  
Quality Level ◽  
Structure And Properties ◽  
Creep Rupture Strength ◽  
Standard Requirement ◽  
Gas Tungsten Arc ◽  
Filler Metals

AbstractGas Tungsten Arc butt welded joints of tubes of 7CrMoVTiB10-10 made using bainitic-martensitic P 24-IG filler metal were found to be susceptible to root cracking. This was avoided by using the CMS-IG filler metal and austenitic EPRI P87 filler metal. Detailed coefficient of thermal expansion analysis for both filler metals was performed. Unfortunately, CMS-IG filler metal is characterized by a lower creep rupture strength than P 24-IG. For this reason, the joints were produced by the 141 method with using two filler metals: P 24- IG and EPRI P87. All the welded joints was characterized by the B quality level. Macrostructural, microstructural and hardness data for both welded joints are presented. The standard requirement, < 350 HV10, was marginally not met and was achieved through post weld heat treatment.

scholarly journals Influence of Alloying Element in Filler Metal on Mechanical Properties of A6061 Al Alloy Welded Joints

2020 ◽  
Vol 9 (3) ◽  
pp. 661-666
Keyword(s):  
Mechanical Properties ◽  
Welded Joints ◽  
Welded Joint ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
Al Alloy ◽  
Fine Grain ◽  
Metal Arc Welding ◽  
Arc Welding Process ◽  
Filler Metals

The current work is intended to study the influence of using ER4043 and ER5356 filler metals on mechanical properties of A6061 Al alloy welded joint made by gas metal arc welding process (GMAW). For this study, 12mm plates of these materials were joint using a type single V groove butt joints with four layers and five passes configurationof welded joints. The soundness of the quality of the weld joint was investigated by X-ray Ct-Scan technique. The joint made with the ER4043 presented an enhancement of mechanical properties. In comparisonwith the joint made with ER5356, Al A6061 with ER4043 welded joint shows to have an advantage due to the formation of very fine grain and have uniformly distributed porosity in the weld region area.

Creep Strength of Welds in Hydrogen Reformer Outlet Manifolds

2009 ◽  
Author(s):  
Carl E. Jaske
Keyword(s):  
High Temperature ◽  
Creep Strength ◽  
Welded Joints ◽  
Piping System ◽  
Weld Metals ◽  
Alloy 800 ◽  
High Nickel ◽  
Rupture Data ◽  
Internal Pressures ◽  
Filler Metals

This paper reviews the creep strength of welds of the type typically used in hot outlet manifolds of hydrogen reformers. These manifolds can be visualized as a high-temperature piping system that collects the reformed gas from the outlets of the catalyst tubes. The catalyst tube outlet usually is connected to the manifold by means of a flexible pigtail. The pigtail is connected to the manifold via welded fittings, and the components of the manifold assembly are connected by welded joints. These hot manifolds operate under internal pressures in the range of 2000 to 3500 kPa and at temperatures in the range of 800 to 900 °C. The components are typically made of wrought Alloy 800, 800H or 800HT or similar cast 20Cr-32Ni-1Nb alloys. The welds are made using filler metals or electrodes of similar compositions or high-nickel alloy compositions. Creep-rupture data that have been developed for weld metals are reviewed and compared. Problems that have been encountered with failures of welds in this application are discussed. The current recommended materials for welding these manifolds are outlined.

Sign in / Sign up

Export Citation Format

Share Document