Published 2022 | Version v1
Journal article Metadata-only

Mechanical properties and failure mechanism of resistance spot welding joint of 0.13C – 6.98mn medium manganese trip steel

Creators

  • 1. Nanchang University, College of Advanced Manufacturing, Nanchang (China)

Description

A single-pulse spot welding test was performed on 0.13C-6.98Mn medium manganese TRIP steel. The test results showed that the joint performance increases with a rise in welding heat input before splashing occurs. Owing to the fusion zone (FZ) being closest to the heat source, its austenite content was completely transformed and its performance was worse than that of the heat affected zone comprising austenite. The segregation bands of C and Mn observed in the FZ were considered to be the main reason for the deterioration of grain boundary strength. These characteristics of the weld zone led to evident intergranular cracking and transgranular fracture in the tensile test, and all samples in this test showed partial or complete interfacial fractures. (author)

Additional details

Identifiers

URL
https://www.scielo.br/j/mr/a/DPLsYKLgWxHLtC65PPFdrsw/?format=pdf&lang=en;

Publishing Information

Journal Title
Materials Research (Sao Carlos, Online)
Journal Volume
25
Journal Page Range
9 p.
ISSN
1980-5373

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
53042370
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CRACK PROPAGATION; FAILURES; FRACTURE PROPERTIES; HEAT AFFECTED ZONE; MANGANESE; MECHANICAL PROPERTIES; MICROHARDNESS; MICROSTRUCTURE; PHASE TRANSFORMATIONS; RESISTANCE WELDING; SCANNING ELECTRON MICROSCOPY; TENSILE PROPERTIES; WELDED JOINTS; X-RAY DIFFRACTION
Descriptors DEC
COHERENT SCATTERING; DIFFRACTION; ELECTRON MICROSCOPY; ELEMENTS; FABRICATION; HARDNESS; JOINING; JOINTS; MECHANICAL PROPERTIES; METALS; MICROSCOPY; SCATTERING; TRANSITION ELEMENTS; WELDING; ZONES