<p>You should get a good number of technical electives that you can take and specialize your degree. If you want to do aerospace materials take aerospace tech electives.</p>
<p>As far as a Phd it completely depends on your career goals. If you want to go get a job at a manufacturing plant type place then it will do you pretty much no good. If you want to be a professor it is necessary. There are a ton of other jobs between those two where it might help you a little, not at all, or a lot, but until you know what you want to do for a career it’s pretty useless to think about whether or not you want a phd.</p>