Peer review declaration

All papers published in this volume of IOP Conference Series: Materials Science and Engineering have been peer reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing. • Type of peer review: Double-blind Single-anonymous: authors’ identities are known to the reviewers, reviewers’ identities are hidden from authors Double-anonymous: author and reviewer identities are hidden to each other Triple-blind: author and reviewer identities are hidden to each other, and from the Editor(s) Open: author and reviewer identities are known to each other • Describe criteria used by Reviewers when accepting/declining papers. Was there the opportunity to resubmit articles after revisions? -YES THERE IS an opportunity to resubmit articles after revisions, all revisions will be checked by reviewers again to ensure that the authors make all adjustments -all reviewers fill their reviews by the forum belongs to PEC2020 ON CMT, FOR EXAMPLE THE FORM BELOW List of title Edit Review are available in this Pdf.