Answered: How is it that two solid metals in…

How is it that two solid metals in contact at a temperature below the melting point of either can lead to liquidmetal embrittlement?

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter26: Welding Metallurgy

Section: Chapter Questions

Problem 11R: Using Figure 26-18, answer the following questions: a. At approximately what temperature does a 70...

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Concept explainers

The Space Lattice and Unit Cells

Every matter consists of atoms, molecules, and ions. If these atoms, molecules, and ions (micro-particles) are represented in a three-dimensional space-occupying certain specific points in space, then these arrangements are termed as space lattices and the specific points which are being occupied by atoms, molecules and ions are termed as lattice points. The atoms, molecules, and ions at the lattice points are generally grouped in a regular fashion and repeat periodically at the three-dimensional space.

Question

How is it that two solid metals in contact at a temperature below the melting point of either can lead to liquidmetal embrittlement?

Expert Solution

Step 1

The liquid metal embrittlement is found in the alloys where one of the metals is in the liquid state and the other susceptible metal is in the solid-state is under the tensile stress. Under such prevailing conditions, intergranular cracking can be caused.

For instance, in the alloys of steel, the base metal is susceptible to the liquid metal embrittlement by lithium and zinc.

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Principal Metallic Crystal Structures and Crystal Structure Analysis

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