Location

Seattle, WA

Start Date

1-1-1996 12:00 AM

Description

During the diffusion bond process, parts are heated to about one half the absolute melting point, pressed together at a stress below the macroscopic yield stress, and conditions maintained for a specified time. Bonding proceeds through three steps: local yielding of contact points upon initial application of stress; creep deformation on the bonding plane to yield discontinuous voids; and closure of voids by vacancy diffusion. Presently, nondestructive evaluation emphasizes detection of residual unbonds and voids, from incomplete void isolation or closure.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

15B

Chapter

Chapter 5: Engineered Materials

Section

Bonded Joints

Pages

1313-1320

DOI

10.1007/978-1-4613-0383-1_171

Language

en

File Format

application/pdf

Share

COinS
 
Jan 1st, 12:00 AM

Ultrasonic Evaluation of Titanium Alloy Diffusion Bonding

Seattle, WA

During the diffusion bond process, parts are heated to about one half the absolute melting point, pressed together at a stress below the macroscopic yield stress, and conditions maintained for a specified time. Bonding proceeds through three steps: local yielding of contact points upon initial application of stress; creep deformation on the bonding plane to yield discontinuous voids; and closure of voids by vacancy diffusion. Presently, nondestructive evaluation emphasizes detection of residual unbonds and voids, from incomplete void isolation or closure.