GB/T 45135-2024 Superplastic forming and diffusion bonding parts of titanium alloy sheet - General specifications
1 Scope
This document specifies the structural form, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage and quality certification documents of superplastic forming and diffusion bonding parts of titanium alloy sheet (hereinafter referred to as bonding parts).
This document is applicable to the design, manufacture and acceptance of TA15, TA32 and TC4 titanium alloy sheet bonding parts, and other titanium alloy sheet bonding parts are used as reference.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 3375 Welding terminology
GB/T 3620.1 Designation and composition of titanium and titanium alloys
GB/T 3620.2 Titanium and titanium alloy permissible variations of chemical composition for wrought product analysis
GB/T 4698 (all parts) Methods for chemical analysis of titanium sponge, titanium and titanium alloys
GB/T 5168 Microstructure and macrostructure examination for titanium and titanium alloys
GB/T 6394 Determination of estimating the average grain size of metal
GB/T 23603 Test method of titanium and titanium alloy surface contamination layer
JB/T 4008 Non-destructive testing - Test method for ultrasonic testing and evaluation of discontinuities by immersed pulse-echo longitudinal waves
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 8541, GB/T 3375 and GB/T 15757, as well as the following apply.
3.1
superplastic forming and diffusion bonding; SPF/DB
method for manufacturing a part by combining superplastic forming with a diffusion bonding (diffusion welding) process
Note: Often referred to as superplastic forming/diffusion bonding.
3.2
superplastic forming and diffusion bonding parts; SPF/DB parts
parts manufactured by superplastic forming and diffusion bonding (3.1) methods
Note: Commonly referred to as superplastic forming/diffusion bonding parts.
3.3
diffusion bonding rate
percentage of the interface area where the diffusion bonding occurs at the specified diffusion bonding interface
3.4
pit
spot-like depressions formed on the surface of the part due to foreign matter or mold surface quality problems during forming
Note: An apparent defect, see Figure 1 a).
3.5
step difference
step-like misalignment formed on the surface of the part during forming
Note: An apparent defect, see Figure 1 b), commonly found in two-ply board reinforced structures and three-ply board sandwich structures.
Dimensions in millimeters
a) Pit b) Step difference
Key:
SIMsd——the depth of the pit defect;
SIMsh——the height of the step difference defect.
4 Structural forms
4.1 Typical structural forms
The bonding forms of bonding parts generally include four typical structural forms. The structural forms are shown in Figure 2, and the characteristics, process and typical applications of each structural form are shown in Table 1.
Contents Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Structural forms 5 Technical requirements 6 Test methods 7 Inspection rules 8 Marking, packaging, transportation and storage 9 Quality certification document Bibliography
