The effect of hydrogen on ([alpha][sub 2] + [beta])/[beta] transus temperature of super-[alpha][sub 2] alloy

Journal Article · Sun Jan 15 00:00:00 EST 1995 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/S0956-716X(99)80050-8· OSTI ID:6548856

Liao, B; Yang, K; Li, Y Y ^[1]; Wang, T S; Yuan, H ^[2]

---

1. Academia Sinica, Shenyang (China). Liaoning Key Lab. for Materials and Hydrogen
2. Yanshan Univ., Qinhuangdao (China). Dept. of Materials and Engineering

Thermochemical processing (TCP) with hydrogen has been proved to be an effective technique to modify the microstructures and enhance the mechanical properties of conventional titanium alloys. In recent years, some effort has also been made to apply this unique method to Ti[sub 3]Al based aluminide alloys in order to improve their properties, especially the room temperature ductilities, through the modification of the microstructures, for the properties have been found to be highly dependent on microstructures of the alloys. However, further investigation on variations of some basic physical parameters of the alloys caused by hydrogen have not been carried on for TCP with hydrogen on this type of alloys, which can result in arbitrary selections of the treatment parameters for processings. Therefore, quantitative investigations on hydrogen behaviors in the alloys can be very important to the optimization of this novel processing technique for Ti[sub 3]Al based aluminide alloys. In the present work, super-[alpha][sub 2], a Ti[sub 3]Al based aluminide alloy, has been chosen to study the effect of hydrogen on ([alpha][sub 2] + [beta])/[beta] transus temperature of the alloy, an important parameter to phase transformation of this type of alloy, in order to provide a preliminary based for the application.

• OSTI ID: 6548856
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 32:2; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
FABRICATION
TRANSITION TEMPERATURE
HYDROGEN
METALLURGICAL EFFECTS
TITANIUM BASE ALLOYS
DILATOMETRY
EXPERIMENTAL DATA
HYDROGENATION
INTERMETALLIC COMPOUNDS
X-RAY DIFFRACTION
ALLOYS
CHEMICAL REACTIONS
COHERENT SCATTERING
DATA
DIFFRACTION
ELEMENTS
INFORMATION
NONMETALS
NUMERICAL DATA
PHYSICAL PROPERTIES
SCATTERING
THERMAL ANALYSIS
THERMODYNAMIC PROPERTIES
TITANIUM ALLOYS
360104* - Metals & Alloys- Physical Properties
360101 - Metals & Alloys- Preparation & Fabrication