The difference between precipitation hardening and dispersion strengthening needs to be explained. Concept Introduction: The precipitation hardening is termed as age or particle hardening. It is a technique involving the heat treatment of malleable materials to increase their yield strength. The materials are generally structural alloys of magnesium, aluminum, titanium, nickel and few sheets of steel or stainless steels. It makes the metal to become stronger. In the beginning of the process, uniformly dispersed particles are produced within a metal's grain structure which helps hinder the motion and strengthen it if specifically, the metals are malleable. Dispersion strengthening is referred to as the method of growing the toughness of a metallic object by presenting the second phase with the addition of an alloying part.

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Suppose your computer is responding very slowly to information requests from the Internet. You observe that your network gateway shows high levels of network activity even though you have closed your e-mail client, Web browser, and all other programs that access the Internet. What types of malwares could cause such symptoms? What steps can you take to check whether malware has gained access to your system? What tools can you use at each step? If you identify malware, what ways might it have entered your system? How can you restore your PC to safe operation, including the special software tools you may use?

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Chapter 12, Problem 12.19P

Interpretation Introduction

Interpretation:

The difference between precipitation hardening and dispersion strengthening needs to be explained.

Concept Introduction:

The precipitation hardening is termed as age or particle hardening. It is a technique involving the heat treatment of malleable materials to increase their yield strength. The materials are generally structural alloys of magnesium, aluminum, titanium, nickel and few sheets of steel or stainless steels. It makes the metal to become stronger. In the beginning of the process, uniformly dispersed particles are produced within a metal's grain structure which helps hinder the motion and strengthen it if specifically, the metals are malleable.

Dispersion strengthening is referred to as the method of growing the toughness of a metallic object by presenting the second phase with the addition of an alloying part.

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