The effect of chemistry modifications on the solidification behavior and weldability of Alloy 625

Conference · Fri Jan 01 00:00:00 EST 1988

OSTI ID:6729336

Cieslak, M J

The purpose of this study was to examine the effect of chemistry variations on the solidification behavior and weldability of Alloy 625. As the effect of several tramp elements (i.e., S, P, etc.) could be predicted a priori, the experimental alloy design excluded these elements as factors. A 3-factor, 2-level, full fractorial experimental design was examined with the elements Nb(0 wt%, 3.5 wt%), C(0.005 wt.%, 0.035 wt.%), and Si(0.01 wt.%, 0.40 wt.%) being chosen to fill the design matrix. Compositions of the alloys studied are listed. These compositions were prepared using VIM/VAR techniques in the Sandia National Laboratories Melting and Solidification Facility. Conventional hot and cold working techniques were used to produce 3 mm thick sheet for Varestraint weldability testing. Differential thermal analysis (DTA) was used to establish significant solidification temperatures and reactions. Greater experimental detail has been given previously. 2 refs., 2 figs., 2 tabs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6729336
• Report Number(s): SAND-88-936C; CONF-8810176-1; ON: DE89001046
• Resource Relation: Conference: JOWOG 22D joining subgroup, Aldermasten, UK, 4 Oct 1988; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHROMIUM ALLOYS
METALLURGICAL EFFECTS
IRON ALLOYS
MOLYBDENUM ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
CHEMICAL COMPOSITION
CRACKS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
REGRESSION ANALYSIS
SOLIDIFICATION
WELDABILITY
ALLOYS
MATHEMATICS
NICKEL ALLOYS
STATISTICS
360103* - Metals & Alloys- Mechanical Properties
360101 - Metals & Alloys- Preparation & Fabrication
360102 - Metals & Alloys- Structure & Phase Studies