Topic
Filler metal
About: Filler metal is a research topic. Over the lifetime, 11152 publications have been published within this topic receiving 86590 citations.
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Patent•
12 Jun 2001
TL;DR: In this article, a multi-layered heat resistant metal tube is disclosed, which has excellent anti-coking characteristics and is suitable for use under the conditions where carbon tends to deposit and accumulate thereon due to contacting with hydrocarbons at a high temperature.
Abstract: The multi-layered heat resistant metal tube is disclosed. This tube has excellent anti-coking characteristics and is suitable for use under the conditions where carbon tends to deposit and accumulate thereon due to contacting with hydrocarbons at a high temperature. The tube is made by forming weld-mounted overlaid layer of Cr—Ni alloy by building-up welding over the inner surface and/or the outer surface of a substrate tube made of a heat resistant metal. The Cr—Ni alloy comprises 35% by weight or more of Cr and satisfies the relationship: Ni(w%)≧0.5Cr(wt %). Building-up welding is preferably carried out by PPW (Plasma Powder Welding) in which the filler metal is supplied in the form of powder.
46 citations
01 Jan 1979
TL;DR: In this paper, the authors performed thermal analysis and in-terrupted solidification experiments on selected austenitic stainless steel filler metals to gain an understanding of the solidification behavior of austenite stainless steel welds.
Abstract: Thermal analysis and in terrupted solidification experiments were conducted on selected austenitic stainless steel filler metals to gain an understanding of the solidification behavior of austenitic stainless steel welds. The following sequences of phase separations for the alloys inves tigated result: for Type 308 stainless steel filler metal, L^ L + S ^ L + § + y—>y + 5, ar| d for Type 310 stainless steel filler metal, L—> L + y —» y. In Type 308 stainless steel filler metal, ferrite at room temperature was identified as either the untransformed primary 8-ferrite formed during the initial stages of solidification or the residual ferrite after Widmanstatten austenite precipitation. Microprobe and scanning transmission electron microscope microanalyses revealed that solute extensively redistributes during the transformation of primary 6-ferrite to austenite, leading to enrichment and stabilization of ferrite by chromium. The Type 310 stainless steel filler metal investigated solidifies by the primary crystallization of aus tenite with the transformation going to completion at the solidus tempera ture. In samples residual ferrite result ing from solute segregation was absent at the intercellular or interdendritic regions.
46 citations
TL;DR: In this paper, the influence of softening in the heat-affected zone (HAZ) in combination with different filler metal strength classes, weld seams, and hot rolled strips on static performance of a GMA-welded joints was investigated.
Abstract: Softening in the heat-affected zone (HAZ) may occur at welding of high-strength low-alloy steels and might have a negative effect on the static strength of welded joints. This study investigates the influence of HAZ softening in combination with different filler metal strength classes, weld seams, and hot rolled strips on static performance of a GMA-welded joints. The results of these welding experiments were compared and discussed with a numerical investigation on factors influencing the static strength of HSLA steel welds. At the numerical investigation, a systematical study on potential strength influencing factors and a Pareto analysis based on a multiple regression was done and the potential strength influencing factors were ranked according their degree of influence. The comparison of the results of this experimental and numerical study showed a good accordance.
46 citations
TL;DR: In this paper, an improved ultrasonic welding process for the direct joining of thermoplastic and metal was reported, where a metal thin plate was structured with grid arrays on a micro-scale level by laser irradiation.
45 citations
TL;DR: In this paper, the microstructures and creep fracture characteristics of dissimilar welds between Ni-based Inconel 740H superalloy and ferritic/martensitic P92 steel has been investigated.
45 citations