Display EditorFor() value as Read-Only on MVC View?

Question

I have several fields I display on most of my views in my MVC5 Code-First app: [created_date], [created_by], [modified_date], and [modified_by]. For the user, I would like to include these also on my Edit() view, but unlike my other fields I do not wish to have them editable (commonly created/by and modified/by data should NOT be editable).

This is how I have the fields declared on my Edit() view currently:

    <div class="form-group">
        @*@Html.LabelFor(model => model.created_date, htmlAttributes: new { @class = "control-label col-md-2" })*@
        <span class="control-label col-md-2">Created Date:</span>
        <div class="col-md-10">
            @Html.DisplayFor(model => model.created_date, new { htmlAttributes = new { @class = "form-control" } })
            @Html.ValidationMessageFor(model => model.created_date, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        @*@Html.LabelFor(model => model.created_by, htmlAttributes: new { @class = "control-label col-md-2" })*@
        <span class="control-label col-md-2">By:</span>
        <div class="col-md-10">
            @Html.DisplayFor(model => model.created_by, new { htmlAttributes = new { @class = "form-control" } })
            @Html.ValidationMessageFor(model => model.created_by, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        @*@Html.LabelFor(model => model.modified_date, htmlAttributes: new { @class = "control-label col-md-2" })*@
        <span class="control-label col-md-2">Modified Date:</span>
        <div class="col-md-10">
            @Html.DisplayFor(model => model.modified_date, new { htmlAttributes = new { @class = "form-control" } })
            @Html.ValidationMessageFor(model => model.modified_date, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        @*@Html.LabelFor(model => model.modified_by, htmlAttributes: new { @class = "control-label col-md-2" })*@
        <span class="control-label col-md-2">By:</span>
        <div class="col-md-10">
            @Html.DisplayFor(model => model.modified_by, new { htmlAttributes = new { @class = "form-control" } })
            @Html.ValidationMessageFor(model => model.modified_by, "", new { @class = "text-danger" })
        </div>
    </div>

Can anyone offer a way to make these fields read-only?

I tried DisplayFor() like on my Details View, but when I go to save the record, the value in my EditorFor() for [created_date] changes from "2015-02-18" to "0001-01-01" and created_by changes from my system username as previously set to null with the validation message "The created_by field is required." I believe this has something to do with my model annotations for the fields, but I don't see why the DisplayFor() is not passing the value through my controller like how the EditorFor() does...?

Model Annotations:

    [Required]
    [DataType(DataType.Date)]
    [DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
    public DateTime created_date { get; set; }

    [Required]
    public string created_by { get; set; }

    [DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}")]
    public DateTime? modified_date { get; set; }

    public string modified_by { get; set; }